my last hand ... 4 handed short stack but not < 10xBB

[schwza]

i would make a more normal-sized bet here. you want button to lose a lot with 6x or 5x. i'd bet 7.5k and plan on betting the turn for 3/4 pot. the only reason to check the flop is so that you can c/r, but you have too much to c/r all-in and you will be in a tough spot if you get called and the turn is diamond (or just a brick).

i'd bet again on the turn. it's a crappy card, but if villain is bad enough to call bets with overs (as it sounds like has been), let him.