Well most are probably in between that 5-10" range, don’t think it would be much of a punishment to go from 7 to 5 and still be able to do work in the bedroom
Thats what makes the question fun… 5" is a no brainer… but 3" you really have to think about, you wanna have a tiny barely usable dick but be able to hump for an hour… or do you want to be massive but pretty much never be able to please a chick with it