Hand from $33 SNG

All comments appreciated.

Blinds are $50/$100. My stack is around $1600. The other players in this hand all have about the same except the big blind who has about $2800

I have K [img]/images/graemlins/club.gif[/img]10 [img]/images/graemlins/club.gif[/img] in MP. There is one EP caller, I call, the button calls, SB completes and BB checks. Pot is $500 now and the flop comes:

2 [img]/images/graemlins/club.gif[/img]9 [img]/images/graemlins/heart.gif[/img]Q [img]/images/graemlins/club.gif[/img]

SB checks, BB bets $550, EP folds.

What should I do here? I have straight and flush draws and an overcard. But this bet is for over 1/3 of my stack.