11$ Interesting level 4 hand

[Freudian]

Villain is somewhat loose (33% seeing flop, 20% PFR).

Party Poker No-Limit Hold'em Tourney, Big Blind is t100 (7 handed) converter

CO (t1420)
Hero (t1460)
SB (t985)
BB (t715)
UTG (t520)
MP1 (t1435)
MP2 (t1465)

Preflop: Hero is Button with 5[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/heart.gif[/img].
<font color="#666666">4 folds</font>, <font color="#CC3333">Hero raises to t300</font>, <font color="#666666">1 fold</font>, BB calls t200.

Flop: (t650) Q[img]/images/graemlins/spade.gif[/img], 9[img]/images/graemlins/spade.gif[/img], Q[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
BB calls [t515] , <font color="red">Hero ?</font>

1. What should hero do?
2. Is trying to steal blinds with 55 in level 4 a marginal play?