Flush draw on the bubble

[Rekwob]

$12 rebuy on VCPoker. 20 players left, im about 6th, top 18 pay. first limper hadnt gotten out of line, limping wasnt typical of him though. the second limper was horrible, limped often with weak hands and folded on the flop.

Button (t29960)
Hero (t26350)
UTG (t47900)
UTG+1 (t19805)
MP1 (t40075)
MP2 (t17440)
CO (t9910)

Preflop: Hero is BB with 8 [img]/images/graemlins/club.gif[/img], 5 [img]/images/graemlins/club.gif[/img].
2 folds, MP1 calls t2400, 1 fold, CP calls t2400, 1 fold, Hero checks.

Flop: (t7200) 4 [img]/images/graemlins/club.gif[/img], 9 [img]/images/graemlins/club.gif[/img], A [img]/images/graemlins/heart.gif[/img]
Hero...

whats my plan? bet out or check, and how do i respond to a 5k bet from MP1 or a push from CO?

18th will be enough to get my money back from rebuys, but obviously im looking for first, which is ~$900