What would you do? #180 - Another river bluff spot?

Full Tilt Poker $0.50/$1 No Limit Hold'em - 9 players
The Official DeucesCracked.com Hand History Converter

CO: $65.00
Hero (BTN): $167.85
SB: $61.20
BB: $35.00
UTG: $104.35
UTG+1: $103.65 - 11/8 / 24% steal / 3.9% 3bet / 2.9AF / 68% cbet flop / 899 hands
UTG+2: $23.15 - Fish (obviously)
MP1: $215.70
MP2: $100.00

Pre Flop: ($1.50) Hero is BTN with 7d 6d
1 fold, UTG+1 raises to $3.50, UTG+2 calls $3.50, 3 folds, Hero raises to $15, 2 folds, UTG+1 calls $11.50, 1 fold
I have position and I want to see how this player acts out of position.  I've been testing a few of the regs lately.  Before I start getting flack for raising an 11/8, I should point out a few things: I am squeezing with the expectation of calling UTG+2's shove, I am planning on folding to an UTG+1's 4bet, and I am in position.  His flat (which is terrible, IMO) here says he has one of two hands: JJ,QQ (with a heavier weighting towards QQ).

Flop: ($35.00) Jd 9s 9d (2 players)
UTG+1 checks, Hero bets $18, UTG+1 calls $18
I perform a "standard" cbet flop with my represented AA, KK, AK.  He flats.

Turn: ($71.00) 4c (2 players)
UTG+1 checks, Hero checks
I try to pot control my supposed hand, representing AK.  If a King falls on the river, I'm pretty certain that I'll be betting, but I'm more inclined to believe that he'll lead the river if a King falls, which will force me to fold.  If a diamond falls, I can certainly bet that - as well as an Ace.

River: ($71.00) Ah (2 players)
UTG+1 checks, Hero bets $71, UTG+1 folds
I hit my "Ace" and make him a bet he can't accept...  Ahhh... the power of position.  If I make a lesser river bet, I don't know that he folds.  I also wonder if he folds to a turn bet.  Either way, the Ace definitely bailed me out.

Final Pot: $71.00
Hero wins $68.00
(Rake: $3.00)