#1- Ensure you've read the I864 instructions FIRST.
1. Return Transcript
OR not And
2. Copies of your full FEDERAL tax Return (all pages and schedules) AND earnings statement(s) (Earnings statements are W2s or 1099s).
No. The 1040 is not a full tax return.
Yes if that's how many pages your Complete Federal return is.
If those are FEDERAL, yes.
It will say Schedule as the title.
*BUT you can avoid ALL of your confusion and simply submit a Return Transcript.
The instructions will be helpful to you to eliminate your confusion.