1. No 2. Yes this is a good basis 3. Most likely approvable 4. Attorneys assist with overall understanding and guidance but can be filed alone.

Yes and their 1099 for self employment.

You should include the AGI from 2020.

No, this should not be an issue and you should be able to petition for your spouse.

You can update your name at the time of interview.

No, not if you have a valid I 751 pending at this time.

More information is needed about your caxe. What is your current status in the United States?

Yes, a marriage while the case is pending does not impact the case.

Inform the officer of the marital change at time of interview.

Your question is unclear. Best to have an attorney review your entire case for guidance.