30+3 Rebuy lategame hand

[Sabrazack]

I have no idea how to play this kinda marginal in this situation. I don't know enough about villain to tell what kind of hands he will be raising here. So im asking, what will most players raise from that position, and is AJ +EV to push against that range. Cause calling isn't an option, or would anyone do a stop n go here?

Level:11 Blinds (400/800)

Seat 5 is the button
Total number of players : 9

Seat 2: casinoice ( $10188 )
Seat 7: HERO ( $6460 )
Seat 9: bruceconran ( $4070 )
Seat 3: L8Show ( $18415 )
Seat 6: Luckybab ( $14158 )
Seat 8: wildoates ( $9556 )
Seat 5: crazydog777 ( $15900 )
Seat 1: donflun ( $5875 )
Seat 10: Noah_C ( $14250 )
Trny:16711920 Level:11
Blinds (400/800)

** Dealing down cards **
Dealt to HERO [ Jh Ac ]
wildoates folds.
bruceconran folds.
Noah_C folds.
donflun folds.
casinoice raises [2400].
L8Show folds.
crazydog777 folds.
Luckybab folds.

HERO does WHAT??