24s big-blind, river dilemma

[cpk]

reasonably good 10-20 game at muckleshoot. i have 2[img]/forums/images/icons/spade.gif[/img]4[img]/forums/images/icons/spade.gif[/img] in the big blind. six limpers, i check.

flop: T[img]/forums/images/icons/club.gif[/img]6[img]/forums/images/icons/spade.gif[/img]4[img]/forums/images/icons/club.gif[/img]

i check. so does everyone else!

turn: T[img]/forums/images/icons/spade.gif[/img]

i decide to semibluff my 4 and (anti-nut) spade draw. two loose-weak players call.

river: A[img]/forums/images/icons/spade.gif[/img]

i bet, first opponent raises, other opponent folds. there is now $186 in the pot.

what do you do?