darth vader

What you outlined seems fine.

You've changed your address 2 times.  I think you have done all you need to do.  Good luck.

I saw that too. I think I understand the issue of multiple ways to do this and any one of it satisfies the AR-11 requirement. What is annoying is that, on COA website that you poster the above screenshot from, I think they refer to the myUSCIS way of updating address as "E-COA" but nowhere inside myUSCIS is the term "E-COA" ever used. Is the myUSCIS way considered the E-COA?

If the instructions say, as they do, "Do not mail a form that you have already submitted online," then this issue has been resolved.

While I agree about post it notes...
 
"Do not use highlighters or correction fluid or tape. The scanners we use will not properly read information that is greyed out, highlighted or corrected using correction fluid or tape."
 
Source: https://www.uscis.gov/forms/filing-guidance/tips-for-filing-forms-by-mail

You're worrying about straw dogs.  Your choices are to send it without annotation, send it with annotation, or don't send it.  Do whichever is most comfortable.

I objectively think that you're OK now.
However, if you want to mail it in, write "As filed online on [date]" to avoid potential confusion.

Thank you. I am guessing this would mean that as long as you have proof that you mailed the i-865 within 30 days that should be enough?

30 days.

Mail only.

That's it.

I made sure to do this and it really made putting together the evidence for ROC so much easier. And I kept doing it, so we'll have new evidence for naturalization. 
 
Also to add a related note to a couple of things you listed - adding your spouse as an emergency contact everywhere you can (doctor, work, uni, church, whatever) can also be useful evidence and just good practice in general. For instance, I was able to print out my emergency contact info for work and school to send in our ROC packet.

One additional thing, we have CCTV in our garage and around the front and back yard. We use the garage as a bit of a 'man cave' for projects and do gardening together. The CCTV has timestamps and with the garden you'll see the changing seasons. So getting photo stills of us basically living a life together over the conditional period should be pretty helpful.
 
Also another vote for USPS informed delivery. Don't delete those notification emails...they've had scans of mail addressed to the both of us, and I'm saving these down as evidence. Letters addressed to the both of you, or at the same address like from the doctor's office, HOA, and govt are pretty good evidence. Others are prescription stubs, me and the hubby use the same pharmacy and our med stubs have our address and date stamp on, so that might help too.

Here's more for your list..
 
1.  If you are having to do the I-751 in two years (ROC), START COLLECTING DATA NOW!  Get a plastic bin, or old shoe box, or something, and drop any mail addressed to both of you (holiday greetings, invitations, personal notes, etc.) in it.   Have copies of all rental leases/deeds/mortgages in the box (or scan them electronically). Do the same with an electronic folder on one of your laptops or desktops or have a USB stick that lives in the shoebox, too.  Diligently copy any and all bank statements, insurance papers with both names, credit card statements, yearly tax transcripts to your hard drive/thumb drive.  If you don't keep things electronically, then save the paper copies.  Do this throughout the two years between immigration and ROC, and save yourself the heartache of trying to find back copies of everything at the last minute.
 
2.  Have both parties listed on rental/homeowners/car insurance policies as an authorized claimant.  This has nothing to do with USCIS and everything to do with protecting each other in a terrible situation.  Example:  your house is demolished in a storm, and the person who is listed on the policy dies.  The other spouse cannot file an insurance claim if they are not listed as a party that is AUTHORIZED to file a claim.
 
3.  Make wills and have medical powers of attorney for each of you.  USCIS likes to see this, as it shows that both parties are looking to the future.
 
4.  If you travel, take pictures together with recognizable landmarks in the background.  Keep all boarding passes of airline/train trips.  If you make a hotel reservation, put BOTH names on the reservation. Save your receipts and copies of the reservations.  If you visit family or friends, take pictures together.
 
5.  If you don't have kids, then pets can count!  Have both names on your account at the vet, and print out vet receipts.  We shipped our cat from Australia to the US and used all the paperwork from HER travel as documentation.
 
Best of luck on the rest of your journey!!!
 
Sukie in NY

I was late to file AR-11 so many times 😅 And my USC spose never filed one 🥴

Our neighborhood has no names on mailboxes, but I was still paranoid about USPS not delivering my official mail.  I signed up for Informed Delivery, so I'll be listed in USPS records as a resident at our address.
 
USPS Informed Delivery -- https://informeddelivery.usps.com/box/pages/intro/start.action
 

Refer to the USCIS Guide for New Immigrants -- https://www.uscis.gov/sites/default/files/document/guides/M-618.pdf
 
 
Not listed in the PDF, but mentioned in the paper brochure that comes with the plastic green card --
Report foreign bank and financial accounts.  (Google "FBAR".)

That one depends on the neighbourhood, but always a good idea to write your name on the mailbox.  Some mailpersons won't deliver official mail (eg. LPR card, USCIS notices), unless the name appears on the mailbox.  

7.  Do NOT try to vote.
 

Getting credit in the US with a new SSN can be fun. The most effective thing was to have my husband add me as an authorized user on his credit cards, it effectively copied his credit file over to me and I was then approved for a $5k limit Apple Card around 1.5 months after immigrating. Then we were jointly approved to refi the mortgage on our house under a pretty low interest rate.

As mentioned, photos have to be to recent (taken within last 6 months). Many have waited over a year from submitting to NVC to get interview letter, so obviously the photos submitted would not work. I had to take new photos which were not identical to the ones submitted to NVC. The two photos have to be identical to each other.
 
Side note - it is funny they ask for two, but then return both during the interview. No idea what they do with two if they only need to scan them.

I will send you the list I created for myself by DM. 

I got my tracking information a day after my interview. According to Canada Post, I should be able to collect it Mon/Tues. I will update once I have the Visa on hand. 

Yup, the immigration process is not known for its compassion or empathy with the separated couples. They just do their jobs as per the laws and policies. Good thing is, it almost always works out in the end. Hang in there!

I was talking about time taken to receive the form and fill it and send it back, not the actual DS5535 processing time, which I know can be more than 6 months. If the time in receiving and sending the form back adds only one or two weeks to the whole dreaded process, I would rather not waste time before interview in filling it. Hope that makes sense. And yes, I am done worrying about this. Off to gathering and double checking all the interview documents. Thank you!