I'm not sure if this is the right forum to ask this or not, but if I request a copy of my file from the FAA will it also include 8710s that I have signed off on as a CFI?

I'm almost certain it will not. Those would be in the records of the students in question.

No. If you signed off an applicant, it's the applicant who presented the 8710 form. It's in their file.

I can reply with 90% certainty that it will not, As I have ordered a copy of my file about 7 years ago. This is a big file FAA OKC charges something like 3 cents per page. It includes all 8710, written-exam scores and any correspondence you may have had with them.

You can however look at all I-ACRA's you have signed off online by making a search date range of the time you've been a CFI. Doesnt tell you pass or fail but you can keep track.

I am pretty sure it does not.

As with anything from the FAA and OKC in particular, be prepared to do two things.
1-spend money
2-wait