Everything on the checklist is required unless it doesn't apply to you such as prev marriage ect. Use the checklist. When we filed I went by the website and had to submit additional documents later. You will need the CENOMAR (Certificate of No Marriage Record) for the USCIS anyway so have your spouse get one and submit it as well. Citizenship item 5 is only required if your spouse is currently in the US, otherwise the passport should show current address within the Philippines. The cover letter does not require notarization but the other 4 ROM forms do, ALL 4 NEED WET SIGNATURES/notarized, don't just sign/notarize 1 and make 3 copies. I would email the embassy and ask if it is ok for only 1 notarized signature (yours) for the ROM form, technically in country it requires both parties but I was told by the person who processed ours to just get the 4 notarized and that would be fine. Saved a lot of shipping back and forth for signatures. Make sure the Utah certificate is Apostilled or it will be refused.
Quirk is the return envelope, you cannot get a priority mailer "prepaid" from USPS as they have to be weighed prior. I had to go to the post office and explain I needed something prepaid with a tracking number and the literally stuck stamps on the priority envelope to make it "prepaid". Evidently the labels can't be printed without being weighed first.
The SF consulate is known for being a bit wishy washy with requirements so be prepared for a call or email asking for something else as it seems to shift according to the person actually processing it.