Action with Jacks an' I'm confused at the $109s

[kyro]

Hi, remember me?

No reads. I'm assuming a typical $109 but the little I've seen at this level makes me think my cat could beat it for a decent ROI with little training.

Party Poker No-Limit Hold'em Tourney, Big Blind is t15 (10 handed) converter

CO (t975)
Button (t1015)
SB (t785)
BB (t945)
UTG (t820)
UTG+1 (t1035)
UTG+2 (t625)
MP1 (t1345)
Hero (t975)
MP3 (t1480)

Preflop: Hero is MP2 with J[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">1 fold</font>, UTG+1 calls t15, UTG+2 calls t15, <font color="#CC3333">MP1 raises to t30</font>, <font color="#CC3333">Hero raises to t120</font>, MP3 calls t120, <font color="#666666">2 folds</font>, SB calls t110, <font color="#666666">1 fold</font>, UTG+1 folds, UTG+2 folds, MP1 calls t90.

Flop: (t522.50) T[img]/images/graemlins/spade.gif[/img], 4[img]/images/graemlins/diamond.gif[/img], 7[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">SB bets t275</font>, MP1 calls t275, Hero ??

Push/fold? How often am I ahead here?

Edited for snazzier title!