US Immigration from Malaysia

I googled this for 30 min and couldn't find answers. I read before its easier to change name during marriage as opposed to any other time, but I can't find information on how thats done. We live in Alabama.

Also, is it ok to do this before she gets her SSN? We applied for it 10 weeks ago but still haven't received it.

My petition isn't approved as of right now, but I am asking in advance. Since the new I-485 for AOS cases has integrated I-864W into I-485, that leaves the consular cases out. Will I-864W still work on the consular side for those outside the US, or do I have to do I-864? (Filing for children only)

I thought it only takes 2 to 4 weeks, but its been almost 6 weeks now and still no SSN. We applied in person on Jan 6th. We called back last week and they said they are still processing it. Is this normal?

I accidentally got some blue ink onto my I797 extension letter:

Am I blowing this out of proportion or might this give me issues when attempting to board or re-enter the US?

I changed my first and middle name in 2018 for personal reasons. I decided to use my passport as proof of US citizenship, since it has my updated name, and I never updated my birth certificate. I included my old name in the "other names used" section of my I-129F form, and have both the petition and the court order for my legal name change. Do I need to submit both the "petition for legal name change" along with the "court order for legal name change"? Or is just the second one fine?

It seems like an obvious question, that only the court order would be fine, but I recall bringing both the petition and the court order to the DMV and other government agencies. I can't recall whether both were actually necessary.

If possible, I don't want to include the petition as it has a blank line for "attorney's name" (I didnt have to appear in court), and a circle next to it as if there's missing information.

Just hoping this is a silly question and the court order alone will be fine. Thanks in advance!