Is A-High enough to call here?

[bballwiz]

Villain has been playing super aggresive and looking to gamble.

PokerStars No-Limit Hold'em Tourney, Big Blind is t150 (6 handed) internettexasholdem.com

Button (t9035)
SB (t5010)
BB (t13175)
UTG (t6600)
MP (t2412)
Hero (t12617)

Preflop: Hero is CO with A[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/heart.gif[/img].
<font color="#666666">1 fold</font>, MP calls t150, <font color="#CC3333">Hero raises to t600</font>, Button calls t600, <font color="#666666">2 folds</font>, MP calls t450.

Flop: (t2025) 7[img]/images/graemlins/heart.gif[/img], 3[img]/images/graemlins/heart.gif[/img], 2[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">MP bets t1812 (All-In)</font>

A second part to this question is if you decide to put money in here, do you flat call or move in to protect. I didn't really have concern for the guy behind me that he hit the hand big. Getting over 2-1 here I really considered putting money in.