Bubble hand with flush draw

[rhizome]

Party Poker No-Limit Hold'em Tourney, Big Blind is t100 (4 handed) converter

Hero (t1085)
BB (t2430)
UTG (t3630)
Button (t855)

Preflop: Hero is SB with A[img]/images/graemlins/heart.gif[/img], 8[img]/images/graemlins/heart.gif[/img].
UTG calls t100, Button calls t100, Hero completes, BB checks.

Flop: (t400) T[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(4 players)</font>


I know that it is normally not a good idea to go broke on flush draw, but this situation seems like a good place to gamble. If big stacks have a K, they will most likely call. Shorty probably would also call with a K if one of the big stacks didn't also call. The pot is already 40% of my remaining stack. Is this a good time to push? Or should I have pushed it preflop and hoped to take it down at that point?