Deepstack poker aggressive play any good with my AQ

[lijkie]

Help me out the this hand please, all advise welcome:

Deep stack tournament Poker stars 10$+1$. Startingstack 5K

I'm playing mostly tight with top 5% startinghands and have accumilated with this stragegy some 3000 chips allready. I have a just above average stack at this moment in the tournament.

The blinds are 100/200 and i'm on the button with AQ offsuite.

In middle position player limps in for the BB 200.
I raise from the button to 3x BB = 600.
The SB calls 600
The BB fold
The MP player calls 600

The pot is exactly 2000 and the flop is: A T 7 with 2 spades [img]/images/graemlins/spade.gif[/img].

The SB checks and the MP player checks aswell.

I bet 1200 in a pot of 2000.

The SB calls and so does the MP player.

The pot is 5600 and the turn is the K (not a spade [img]/images/graemlins/spade.gif[/img]).

Now the SB bets 2360 and the MP player calls allin with 2250 or something.

I have 6720 left in chips and the SB has 4600 left after he bets 2360.

Fold, call or raise (how much)?