1/2 nl live KQs to push or not to push

[meleader2]

Hero is MP sitting on ~450$ holding K[img]/images/graemlins/club.gif[/img] Q[img]/images/graemlins/club.gif[/img]

villain 1 is a fish to my left with 500$ and i'm only at this table because i want to get his $. he's been luck boxing all night and i'm value betting his arse off.

villain 2 is 4 seats to my left with (EDIT ~200$) and will raise preflop with any ace.

i limp, fish limps, villain 2 makes it 15$ to go, 5 callers.

flop (71$ after rake):

K[img]/images/graemlins/heart.gif[/img] 7[img]/images/graemlins/club.gif[/img] 3[img]/images/graemlins/club.gif[/img]

i check, fish checks, villain 1 bets out 50$, others fold, it's on hero.

i can either donk push my stack, which will push out fish, or i can call and call the fish's all in if he pushes. either way i think i should get it in on the turn no matter what falls.

hero calls, fish calls.

thoughts?