AQs hand

[betgo]

Party Poker $200 MTT, blinds 150/300. Villain has T10K, I have T12K. Villain is a good aggressive playrer, but not a maniac.

Villain raises to 700 in second position. I call in SB with AQs. Flop is KQ5, rainbow. Check/bet 600/call. Turn is 7 making 2-flush. Check/bet 1900/call. River is K making 3-flush and pairing board. Check/allin 6800.

Should I call the push? How did I play the hand?