109: KQo hand

[downtown]

No reads, because I'm essentially a 109 sng n00b.

Party Poker No-Limit Hold'em Tourney, Big Blind is t50 (8 handed) converter

MP2 (t1125)
Hero (t915)
Button (t1305)
SB (t1540)
BB (t1140)
UTG (t2135)
UTG+1 (t805)
MP1 (t1035)

Preflop: Hero is CO with Q[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/spade.gif[/img].
<font color="#666666">4 folds</font>, <font color="#CC3333">Hero raises to t150</font>, <font color="#666666">2 folds</font>, BB calls t100.

Flop: (t325) 9[img]/images/graemlins/club.gif[/img], 8[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets t150</font>, <font color="#CC3333">BB raises to t425</font>,

Hero's action?