From my attempts to go above 30, I think it's ambitious, but not unrealistic.

Highest I ever got overhead without worrying about form or dropping it on my head was two dumbbells at 12 kg each, so about 2*26.5 lbs, and it was shaky enough that I did not dare to go up to 14 kg (13.1 lbs) without a spotter or a hard hat *G*.