how should I have played this? AQs

PokerStars No-Limit Hold'em Tourney, Big Blind is t30 (6 handed) converter

BB (t1165)
UTG (t1880)
Hero (t3185)
CO (t2935)
Button (t2925)
SB (t1410)

Preflop: Hero is MP with A[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to t90</font>, <font color="#666666">1 fold</font>, Button calls t90, <font color="#666666">1 fold</font>, BB calls t60.

Flop: (t285) Q[img]/images/graemlins/heart.gif[/img], 8[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, Hero checks, Button checks.

Turn: (t285) Q[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, Hero checks, <font color="#CC3333">Button bets t120</font>, BB folds, Hero calls t120.

River: (t525) T[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets t420</font>, <font color="#CC3333">Button raises to t1500</font>, Hero folds.

Final Pot: t2445

I almost bet the flop to try to take it down right there but got scared because the BB waited awhile before he checked [img]/images/graemlins/tongue.gif[/img] In retrospect I should have ignored that and taken a stab at it, the pot was already worth taking down. Should I have raised it more preflop? AQs sucks, I never know how to play it and hate losing to AK or KQ ://

Afterward he told me he had the straight, although I find his turn bet odd if that is the case, I put him on KQ or QTs, the only hand I beat that he'd raise like that is QJ, or the straight.

[skierdude1000]

BET TURN! no free card for a drawing flush or strait