22's to push or not to push

[GutPunch]

Party Poker No-Limit Hold'em Tourney, Big Blind is t30 (9 handed) converter

CO (t350)
Button (t635)
SB (t765)
BB (t1190)
UTG (t1355)
UTG+1 (t715)
MP1 (t1505)
MP2 (t745)
Hero (t740)

Preflop: Hero is MP3 with A[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/heart.gif[/img].
UTG calls t30, <font color="#666666">1 fold</font>, MP1 calls t30, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to t150</font>, CO moves Allin for 350, Button calls t350, <font color="#666666">2 folds</font>, fold, UTG calls t320, MP1 folds, Hero??