Also, the screenshots and such aren't required if you just want to use TestFlight to share with a few friends. Of course, each build only lasts 90 days, so that could get tedious in the long run.
I can't speak from a position of knowledge as I don't handle the Apple side of things at all but we've had our builds removed from testflight for petty reasons like that and it was up for significantly less than 90 days.