100NL AA vs ??

This is my first post so please don't flame. I've been playing live, online NL Hold'em for about 2 1/2 years now. It all started in Iraq, when a bunch of my Marines buddies got bored. Anyways, just wanted to share this with all of you and was just trying to get some feedback on maybe how I should of played it different. I honestly cannot see me playing the flop nor the hand any other way against a 745 25/13 player. Here is the hand:

PokerStars Game #18189853552: Hold'em No Limit ($0.50/$1.00) - 2008/06/17 - 00:26:08 (ET)
Table 'Georgia II' 9-max Seat #9 is the button
Seat 1: SB ($82.55 in chips)
Seat 2: BB ($93 in chips)
Seat 3: UTG ($142.50 in chips)
Seat 4: UTG+1 ($207.55 in chips)
Seat 5: Hero ($95.60 in chips)
Seat 6: MP2 ($88.50 in chips)
Seat 7: MP3($105.55 in chips)
Seat 8: CO ($105.45 in chips)
Seat 9: Button($100 in chips)
SB: posts small blind $0.50
BB: posts big blind $1
*** HOLE CARDS ***
Dealt to Hero [Ad Ac]
UTG: calls $1
UTG+1: folds
Hero: raises $4 to $5
MP2: folds
MP3: folds
CO: folds
Button: folds
SB: folds
BB: folds
UTG: calls $4
*** FLOP *** [8s 4d Ts]
UTG: checks
Hero: bets $6
UTG: raises $14 to $20
Hero: raises $20 to $40
UTG: raises $97.50 to $137.50 and is all-in
Hero: calls $50.60 and is all-in
Uncalled bet ($46.90) returned to UTG
*** TURN *** [8s 4d Ts] [5c]
*** RIVER *** [8s 4d Ts 5c] [As]
*** SHOW DOWN ***
UTG: shows [7h 6h] (a straight, Four to Eight)
Hero: mucks hand
UTG collected $189.70 from pot
*** SUMMARY ***
Total pot $192.70 | Rake $3
Board [8s 4d Ts 5c As]
Seat 1: SB folded before Flop
Seat 2: BB folded before Flop
Seat 3: UTG showed [7h 6h] and won ($189.70) with a straight, Four to Eight
Seat 4: UTG+1 folded before Flop (didn't bet)
Seat 5: Hero mucked [Ad Ac]
Seat 6: MP2 folded before Flop (didn't bet)
Seat 7: MP3 folded before Flop (didn't bet)
Seat 8: CO folded before Flop (didn't bet)
Seat 9: Button folded before Flop (didn't bet)

you got the money in as a significant favourite and played it fine. This is a standard suckout rather than a possible line debate.

Typical bad beat. A LARGE majority of the time, you're going to be celebrating at the end of hands like this.

Agreed with above and want to add - Welcome to FTR.