($22) Got myself in a bind with TPTK, need help

[1C5]

No read on villian, nothing to stand out before this hand.

1. How is my raise?

2. Now what?

Party Poker No-Limit Hold'em Tourney, Big Blind is t50 (7 handed) converter

Button (t720)
SB (t2080)
BB (t550)
UTG (t1725)
MP1 (t625)
MP2 (t830)
Hero (t1470)

Preflop: Hero is CO with A[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/diamond.gif[/img].
UTG calls t50, MP1 calls t50, <font color="#666666">1 fold</font>, Hero calls t50, <font color="#666666">1 fold</font>, SB completes, BB checks.

Flop: (t250) Q[img]/images/graemlins/spade.gif[/img], 7[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(5 players)</font>
SB checks, BB checks, UTG checks, <font color="#CC3333">MP1 bets t50</font>, <font color="#CC3333">Hero raises to t225</font>, SB folds, BB folds, UTG folds, <font color="#CC3333">MP1 raises to t475</font>, <font color="#CC3333">Hero ?