QcQx on ccc Board

[KStV]

Full Tilt 180-player SnG ($2.25). Blinds t30/60. No read on SB or Big Stack. Hero playing orthodox TAG.

Hero in CO with t1,600.
SB has t2,500.
Big Stack in BB with t9,000.

Hero dealt Q [img]/images/graemlins/club.gif[/img] Q [img]/images/graemlins/diamond.gif[/img]

Folds to Hero, who raises to t180.
BTN folds.
SB calls.
Big Stack calls.

FLOP (t540): 3 [img]/images/graemlins/club.gif[/img] J [img]/images/graemlins/club.gif[/img] 7 [img]/images/graemlins/club.gif[/img]

SB checks. BB checks. Hero??