Did I screw up or make a good laydown?

[Nacarno]

Very first hand of my SNG so no revelant reads...

PokerStars No-Limit Hold'em Tourney, Big Blind is t20 (9 handed) converter

Button (t1500)
Hero (t1500)
BB (t1500)
UTG (t1500)
UTG+1 (t1500)
MP1 (t1500)
MP2 (t1500)
MP3 (t1500)
CO (t1500)

Preflop: Hero is SB with A[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/heart.gif[/img].
<font color="#666666">2 folds</font>, MP1 calls t20, <font color="#666666">2 folds</font>, CO calls t20, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to t100</font>, <font color="#666666">1 fold</font>, MP1 calls t80, CO folds.

Flop: (t240) J[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/diamond.gif[/img], 2[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets t170</font>, <font color="#CC3333">MP1 raises to t640</font>, Hero calls t470.

Turn: (t1520) Q[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">MP1 bets t760 (All-In)</font>, Hero ???

I'm thinking I possibly should have pushed on the flop, but his raise seemed weird to me. Is folding too weak here? I figured I'd call him down hoping he'd keep betting KQ or AK, but the Q made me think the only hand I could possibly be ahead of was AK.