i think id only wanna squeeze 99 here when i was up against two good thinking players who didn't fold too much to 3bets. Otherwise, if they fold too much, you are turning a hand w/ good value into a bluff, or if they don't fold enough, you get yourself into too many tough spots on the flop. so id just do it for balancing reasons against good players.

dunno what to do on this flop and turn, depends on your image a lot i think. if u have been 3betting too much and hes fed up with u then u have to get it in. if u havent really squeezed much and he has no reason to play back, u r always gonna be crushed here.