I don't hate the preflop 3-bet, as long as you get a fold often enough and/or button steals a lot. Calling and folding aren't bad either.

I think you have to shove the turn. The pot is too big to c/r, c/f is too weak how the hand is played and c/c is basically going all-in.

Could anyone explain to me if and why a flop check/raise would be good/bad?