Good spot for a river bluff here?

[anacardo]

Play at the table has been normal for this level so far. I'm Rob76803 on the button w/ AQ offsuit. I've had aces, AK twice and AQ twice in the last 15 hands and haven't shown down any of them, so my table image is loose, aggro (perhaps maniacal?) I played the AK against edmodo a few hands earlier and he folded to a continuation bet on the flop.

PokerStars $10+1 MTT
PokerStars Game #3238457088: Tournament #16028594, Hold'em No Limit - Level IV (50/100)
Table '16028594 15' Seat #6 is the button
Seat 1: Budreau1 (1285 in chips)
Seat 2: F Fairlane (3555 in chips)
Seat 3: mpg1000 (1525 in chips)
Seat 4: myrtle843 (950 in chips)
Seat 6: Rob76803(3535 in chips)
Seat 7: edmodo (2210 in chips)
Seat 8: TXDuffy (2585 in chips)
Seat 9: CharnC (2840 in chips)
edmodo: posts small blind 50
TXDuffy: posts big blind 100
*** HOLE CARDS ***
Dealt to Rob76803 [Ac Qd]
CharnC: folds
Budreau1: folds
F Fairlane: folds
mpg1000: folds
myrtle843: folds
Rob76803: raises 300 to 400
edmodo: calls 350
TXDuffy: calls 300
*** FLOP *** [9s Jh Ts]
edmodo: checks
TXDuffy: checks
Rob76803: checks
*** TURN *** [9s Jh Ts] [7s]
edmodo: bets 200
TXDuffy: folds
Rob76803: calls 200
*** RIVER *** [9s Jh Ts 7s] [3s]
edmondo: checks
hero: ?????

I called the 200 on the turn bc to me it showed weakness. The check on the river to me shows definite weakness. Throw in a bluff here? If so how much? What's his range here? What's my range? doesnt it look like i hit a high flush here? results to come.