New England Poker Classic $500 NLHE

[superleeds]

Blinds are $150/$300 with $50 ante

Average chip stack is about T7,500

I'm in the small blind with QT. Suits unimportant.
approx. T4,000 in chips.

Folded to CO who raises $300. He has about T10,000 but is not a good player IMHO. Has been playing some crappy Aces etc.

I call. With antes I'm getting 7/2 here so I think my call is fine. I'm prepared to lay this down if the Big Blind comes over the top and I can get away from it if the flop doesn't hit me hard.

BB calls. Seems a good player again IMHO. T5,000

Flop: Q T 7 r

I check, BB checks, CO bets $600

Action?