To puss or push -200 NL 6MAX

[Riina]

Villain is a 26/20/<u> 8.5 </u> over 150 hands.
I underlined what i consider the reason why i even contemplated pushing. Doesn't mean i actually did it lol

Party Poker No-Limit Hold'em, $2 BB (6 handed) Hand History converter Courtesy of PokerZion.com

UTG ($189)
MP ($195.80)
CO ($346.28)
Hero ($318.95)
SB ($589.30)
BB ($280.40)

Preflop: Hero is Button with 9[img]/images/graemlins/club.gif[/img], 7[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">3 folds</font>, <font color="#CC3333">Hero raises to $7</font>, <font color="#666666">1 fold</font>, BB calls $5.

Flop: ($15) 8[img]/images/graemlins/heart.gif[/img], 8[img]/images/graemlins/diamond.gif[/img], T[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets $11</font>, <font color="#CC3333">BB raises to $55</font>, hero ?

any input appreciated, but please elaborate on your reasons. thanks [img]/images/graemlins/smile.gif[/img] ,