NL400: 200+ bbs deep AQs flops a FD

[Jeans]

This hand has been on my mind the whole day and It's really bothering, I would like to hear opinions from players close to my level, and ofcourse from everyone else also.

Poker Room skin
Pot Limit Holdem Ring game
Blinds: $2/$4
9 players
Converter

Stack sizes:
UTG: $379.60
UTG+1: $458.30
MP1: $72.30
MP2: $305.80
MP3: $845.65
Hero: $1.298.70
Button: $116
SB: $444.50
BB: $476.10

Pre-flop: (9 players) Hero is CO with Q[img]/images/graemlins/club.gif[/img] A[img]/images/graemlins/club.gif[/img]
4 folds, MP3 calls, <font color="#cc0000">Hero raises to $20</font>, Button calls, 2 folds, MP3 calls.

Flop: 7[img]/images/graemlins/diamond.gif[/img] 5[img]/images/graemlins/club.gif[/img] 9[img]/images/graemlins/club.gif[/img] ($66, 3 players)
MP3 checks, <font color="#cc0000">Hero bets $40</font>, Button folds, <font color="#cc0000">MP3 raises all-in $825.65</font>, Hero ?

At NL400 I have noticed this is a 99% combo draw relying on fold equity when 100 BBs deep, but what when we get alot deeper?? Against a gutshot + FD I'm a huge favorite. Any overpair would get thrown in the deck immediately, and villain is a good player (don't know him that well but TAGish stats) and I think he knows it. Please give me your opinions