Push Pre-Flop? Or Play as I Did?

[Eric Draven]

Pokerstars 10+1.

Push pre-flop to try to push out big stack, or call and push/call any flop? Looking now I'm leaning towards push, but want to be sure...

PokerStars No-Limit Hold'em Tourney, Big Blind is t30 (7 handed) converter

SB (t400)
BB (t1560)
UTG (t1150)
MP1 (t1540)
Hero (t2425)
CO (t5460)
Button (t965)

Preflop: Hero is MP2 with K[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/club.gif[/img].
<font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to t180</font>, CO calls t180, <font color="#CC3333">Button raises to t420</font>, <font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to t1020</font>, CO calls t840, Button calls t545 (All-In).

Flop: (t3050) 4[img]/images/graemlins/heart.gif[/img], 6[img]/images/graemlins/club.gif[/img], 9[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players, 1 all-in)</font>
<font color="#CC3333">Hero bets t150</font>, <font color="#CC3333">CO raises to t1405</font>, Hero calls t1255 (All-In).

Turn: (t5860) Q[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players, 2 all-in)</font>

River: (t5860) J[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players, 2 all-in)</font>

Final Pot: t5860

[microbet]

I think it's ok in an $11. At a higher buyin I'd push after being raised because reraising to 1020 is saying you have AA or KK and pushing is saying you have AK or 99-JJ.

The way it went down preflop, I'd push on the flop. He's still calling with pocket tens or better and may fold AK or AQ.