didn't read that there were 3 players left. you should definitely go allin with those hands when the blinds are that big, but you can just put out a raise depending on your chipstack vs the blinds. if you're playing against players that only go allin KK or AA, you could fold, but this depends on their chipstacks. usually, someone throws out a raise. it takes a lot of reading skill to know your opponent has AA or KK. i'm guessing the chipstacks were about 10x the blinds. you could put out a 3x raise to see if anyone will take you allin or call. i'm not sure that you were playing $100 dollar tournies, so the players couldn't have been that good.