Hit a weak flush on the river; bet it?

[edge]

5/10 6-handed. I'm SB with 7[img]/images/graemlins/heart.gif[/img]7[img]/images/graemlins/spade.gif[/img] and 1200 behind. I'm playing tighter and more passive preflop than usual since I think some of the other players are gunning for me, but I'm still playing quite aggressively postflop. Two limpers, I complete, LAG BB with 950 behind who I think may be targetting me minraises to 20, everyone calls.

Flop J[img]/images/graemlins/heart.gif[/img]T[img]/images/graemlins/heart.gif[/img]5[img]/images/graemlins/heart.gif[/img] with 80 in the pot.

I check, BB bets 40, folded to me, I call to see what happens on the turn.

Turn Q[img]/images/graemlins/diamond.gif[/img] with 160 in the pot.

I check, BB bets 50, I make it 200, he calls.

River 2[img]/images/graemlins/heart.gif[/img] with 560 in the pot.

He has about 700 left. Is my garbage flush any good? I see bet/folding or check/folding as viable options.