Stars $10/180: Taking Heat on the turn w/ scary board

[mayesie]

Villain is 21/18/3.7 over about 60 hands; the only reads I have is that his c-bets seem to differ in size from value bets
(not too relevant here).

The money is still far away, and I have an above-average stack.

I check the flop because the board seems scary. I wish to keep the pot small, if possible (any feedback here is appreciated). Additionally, I have some outs if I'm behind.

Following the villain's turn push, I think my decision is pretty close (though I'm leaning towards a call).

Please tell me if you think it's close, or if I'm being a nit.

Thanks in advance!

PokerStars No-Limit Hold'em Tourney, Big Blind is t150 (9 handed) internettexasholdem.com

MP1 (t4000)
MP2 (t3244)
MP3 (t3175)
CO (t4090)
Button (t2041)
SB (t2295)
BB (t4390)
Hero (t4713)
UTG+1 (t6190)

Preflop: Hero is UTG with K[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/heart.gif[/img].
<font color="#CC3333">Hero raises to t450</font>, <font color="#666666">2 folds</font>, MP2 calls t450, <font color="#666666">1 fold</font>, CO calls t450, <font color="#666666">3 folds</font>.

Flop: (t1575) T[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, MP2 checks, CO checks.

Turn: (t1575) 5[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets t900</font>, <font color="#CC3333">MP2 raises to t2794</font>, CO folds, Hero ???