HUSNG -- Odd stacks for KQ

[Nichomacheo]

OK, whats the plan here. Looking back at it, I'm not sure at all what to do. My opponent is very aggressive preflop, which is why I'm repopping with KQ here:

PokerStars No-Limit Hold'em Tourney, Big Blind is t50 (2 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Button (t1630)
Hero (t1370)

Preflop: Hero is BB with Q[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/heart.gif[/img].
<font color="#CC3333">Button raises to t150</font>, <font color="#CC3333">Hero raises to t450</font>, Button calls t300.

Flop: (t900) J[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/spade.gif[/img], 2[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero ? </font>

Few questions...
1. Like the 3-bet with KQ? Would you change the bet size to make postflop play more manageable?
2. What do I do on this flop? I've committed a decent chunk of my stack. It seems like no matter what I bet, it looks strong. I can try to induce a raise by betting small (~250), but I think its not much better than just shoving and hoping he calls with a weaker hand. Anyone like checking? How does it change if the flop is Kxx?