Tricky AKs spot 109$ PL

[Roman]

This is from a 109 PL on PS. My image is pretty tight, but somewhat aggressive. Opponent has played rather unremarkably up to now and I have no reads.

I limp pf because if I raise, and get called, im in a tricky spot on the flop. The table was attacking limpers, so I figured a limp reraise was the best way to get my chips into this pot.

Once SB raised however, I had to fear a monster from him, you rarely see rasies OOP like this without big hands. Calling is out of the question, so is it push or fold?
PokerStars (9 handed) converter

Hero has 1415
Villian has 2970

Preflop: Hero is UTG with K[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/heart.gif[/img]. SB posts a blind of 25.
Hero calls, <font color="#666666">3 folds</font>, MP3 calls, CO calls, Button calls, <font color="#CC3333">SB (poster) raises to 350 (pot)</font>, <font color="#666666">1 fold</font>, <font color="#CC3333"> Hero....