Volunteer to be a FAIP if, and ONLY if, you WANT to teach.

(let me say that again...)

Volunteer to be a FAIP if, AND ONLY IF, YOU WANT TO TEACH.

If you don't want to teach, you will likely not do your best--thus your follow on assignment won't pan out like you hope.

Besides, trying to predict what the "hot" carreer path will be 3-4 years down the road is a waste of time.