Stuck Between Habitual Bluffer and 2 Players Behind

[yellowjack]

Villain has given away a lot of chips in the past two orbits on failed bluffs. He's bound to go out in the next 5 orbits and I want some of his chips before he's out. No reads on other players.

PokerStars No-Limit Hold'em Tourney, Big Blind is t30 (6 handed) FTR converter on zerodivide.cx

Hero (t4175)
BB (t1510)
UTG (t1535)
MP (t1430)
CO (t1780)
Button (t3070)

Preflop: Hero is SB with 3[img]/images/graemlins/heart.gif[/img], Q[img]/images/graemlins/heart.gif[/img].
<font color="#666666">1 fold</font>, MP calls t30, CO calls t30, <font color="#666666">1 fold</font>, Hero completes, BB checks.

Flop: (t120) A[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/club.gif[/img], 9[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
Hero checks, BB checks, MP checks, CO checks.

Turn: (t120) 3[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
Hero checks, BB checks, MP checks, CO checks.

River: (t120) 4[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
Hero checks, BB checks, MP checks, <font color="#CC3333">CO bets t150</font>, Hero ???