Pivotal hand late in PStars $3 rebuy super satellite

[McMelchior]

It's the PokerStars $3 rebuy super for Sunday's $350,000 guaranteed; 56 seats available and we're down to 94 players.

I have slightly less than an average stack, and the SB is among the top 5; he has several times proved to be capable of making loose preflop calls and absolutely aggressive plays with quite a range of hands.

PokerStars No-Limit Hold'em Tourney, Big Blind is t4000 (8 handed) converter

saw flop

MP2 (t22864)
Hero (t68412)
Button (t145554)
SB (t228310)
BB (t26962)
UTG (t65296)
UTG+1 (t59760)
MP1 (t41470)

Preflop: Hero is CO with A[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/heart.gif[/img].
<font color="#666666">4 folds</font>, <font color="#CC3333">Hero raises to t10000</font>, <font color="#666666">1 fold</font>, SB calls t8000, <font color="#666666">1 fold</font>.

Flop: (t19400) 6[img]/images/graemlins/club.gif[/img], 5[img]/images/graemlins/club.gif[/img], T[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, ???

The blinds will go up within 5 minutes, and I'm sooo not happy about the idea of facing t3000/t6000 blinds with a stack of fifty-something thousand in the increasingly aggressive field.

I have two overs and the nut flush draw. There's approximately t26,500 in the pot, and I'm left with t58,000. Given the SB's history I don't think a half pot bet will impress him - he'll be capable of raising me all-in with any pair of even a non-nut flush draw.

Is this a check for a free turn card, or do I push? And - if I check - what do I do if I don't pair of flush, and he bets into me?

Best,

McMelchior (Johan)