Am I folding this AJ to a shove?

[J.A.K.]

Been at this table for less than 3 orbits. Villain has been somewhat active without having to show. I felt I was ahead of his range, but after I repopped I genuinely did not know what I would do if he pushed (not a good way to proceed I know). So, is the re-raise amount ok? Do I call a push or fold?


Full Tilt Poker
No Limit Holdem Tournament
Blinds: t200/t400
(Ante: t50)
8 players
Converter

Stack sizes:
UTG: t5084
UTG+1: t7275
MP1: t2945
MP2: t9783
Hero: t10760
Button: t6655
SB: t6282
BB: t1583

Pre-flop: (8 players) Hero is CO with J[img]/images/graemlins/heart.gif[/img] A[img]/images/graemlins/spade.gif[/img]
UTG folds, <font color="#cc0000">UTG+1 raises to t800</font>, 2 folds, <font color="#cc0000">Hero raises to t2800</font>,