Burningyen's bustout hand (how would you play it?)

[burningyen]

I started this hand with 14k, villain (CO) was table chip leader at about 30k. He was limping into as many flops as he possibly could and was playing well after the flop except for a bizarre call of a pre-flop raiser's all-in with J[img]/images/graemlins/heart.gif[/img] 9[img]/images/graemlins/heart.gif[/img] on a Qxx 2-heart flop vs. when Villain had nowhere close to the proper odds and losing the pot would have crippled him (pre-flop raiser had KK, turn came 9, river came J). SB was tight-passive with about 7k.

Blinds 150/300, 25 ante, 10-handed

Hero posts BB, folded around to Villain, Villain calls 300, Button folds, SB calls 300, I check with J[img]/images/graemlins/heart.gif[/img] T[img]/images/graemlins/heart.gif[/img]. I thought about raising, but I had very little fold equity with Villain and decided I would rather see a flop with this hand.

Flop (1150): K[img]/images/graemlins/spade.gif[/img] Q[img]/images/graemlins/heart.gif[/img] 7[img]/images/graemlins/heart.gif[/img]
SB checks, Hero ?