WSOPC satelitte Final Table hand, some help?

[LLKOOLK1]

Final table, 121 players, 1st and 2nd place win seat to any wsopc 10,000 event they choose, plus 2,000, 3rd place got 200$ I was shortstacked with 27 players left, but really opened up and made it to the final table with a stack of 24,000 and was rolling over, what I felt was, a relativly weak final table for this tourney (except Brett_ho, who was the shortstack)
Blinds 600-1200 200 ante
First two players fold, and I open for 3600 with A [img]/images/graemlins/spade.gif[/img]Q [img]/images/graemlins/spade.gif[/img]
Folds to player on the small blind with 32,000, who calls, BB folds.
Flop: 4 [img]/images/graemlins/spade.gif[/img]k [img]/images/graemlins/diamond.gif[/img]3 [img]/images/graemlins/spade.gif[/img]
SB checks
Whats your bet size? Is there anyone who would argue to check behind?
My only read was when we were 5 handed he made a call from the SB and check folded to my bet. But this was my only real run in with himprevious to the final table
????
-LL