99 vs Mid Pos 3x Raise. Do I Push Or Flat Call.

[free card]

PokerStars No-Limit Hold'em Tourney, Big Blind is t4000 (7 handed) pokerhand.org hand converter

BB (t173347)
UTG (t49124)
MP1 (t94898)
MP2 (t178688)
CO (t183254)
Hero (t58896)
SB (t46248)

Preflop: Hero is Button with 9[img]/images/graemlins/heart.gif[/img], 9[img]/images/graemlins/spade.gif[/img].
<font color="#666666">2 folds</font>, <font color="#CC3333">MP2 raises to t12000</font>, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to t58696</font>, <font color="#666666">2 folds</font>, MP2 calls t46696.

Flop: (t118392) Q[img]/images/graemlins/spade.gif[/img], 8[img]/images/graemlins/diamond.gif[/img], 7[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>

Turn: (t118392) T[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>

River: (t118392) 5[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>

Final Pot: t118392
Seat 5: GrnyDouchBag showed [Tc Ah] and won (124792) with a pair of Tens

In this hand, there were 21 remaining in a $10 MMT. I was wondering if I could get some input regarding whether I should have pushed preflop, flat called preflop, or attempted a stop-n-go on the flop with 99 if i decided to flat call. Villain was active, and made standard position raises to steal the blinds. I believe his range to be any pair, A9s or better. Any feedback is appreciated. Thank you.