Way ahead, way behind? AJs near the bubble.

[gerilege]

I'm a FL player, so sorry if my post is too trivial. I was invited to a $20 buy-in private tourney (38 players), and I judged the field a typical $20 one, and considered myself one of the weaker players.

13 players remaining, 9 places pay, but this was rather a prestige tourney, so I wanted to get as high as possible rather than reaching the bubble.

Blinds 75/150, our table is 6-handed.

UTG (7050)
UTG+1 (Hero) (2910)
CO (3800)
Button (5980)
SB (8200)
BB (2400)

Preflop: Hero is UTG+1 with A [img]/images/graemlins/diamond.gif[/img], J [img]/images/graemlins/diamond.gif[/img].
UTG folds, UTG+1 raises to 450, CO calls, all fold.

Pot: 1125
Hero has: 2460
CO has: 3350
Flop: A [img]/images/graemlins/club.gif[/img], T [img]/images/graemlins/spade.gif[/img], Q [img]/images/graemlins/club.gif[/img]
Hero???

My questions:
-In general, should I play AJs in this spot preflop? If yes, how much would you raise preflop?
-How to play the flop and what is my plan for the rest of the hand?
I was confused, because if I bet, I think I will only be called by a better hand. But if I check, and try to induce a bluff, I won't have any idea about my opponents hand.

I would appriciate any feedback.