Calling down with AQo unimproved (Lukie style)

(Heh, get it, "Lukie style". Yes it was intended)

Villian in this hand just sat down not too long ago, but he seemed very fishy. In a previous hand he limped UTG with Q9o, and on a flop of AQ6 two-tone, he bet flop, called a raised, and called a 2nd barrell on the turn from button. Turns out the button was a donkey since he was on a stone cold bluff, and he takes it down with 2nd pair.

For the hand in question, I thought about re-raising preflop, but I'm pretty sure if I don't hit (2/3 of the time) he will still call down with whatever garbage he has, so I decide to call and use my position. I'm pretty sure he doesn't check a flush draw on this flop, plus I have Ac. The only hand I'm worried about is 7x, but coming from a donkey, I think the majority of 7x hands he wants to play from UTG he will limp. Oh yeah, I'm also very worried about AK. Thoughts?

Poker Stars
No Limit Holdem Ring game
Blinds: $2/$4
5 players
Converter

Stack sizes:
UTG: $236.60
CO: $438.50
Hero: $484.70
SB: $917
BB: $473.20

Pre-flop: (5 players) Hero is Button with A Q
UTG raises to $12, CO folds, Hero calls, SB folds, BB calls.

Flop: 7 5 T ($38, 3 players)
BB checks, UTG checks, Hero checks.

Turn: 7 ($38, 3 players)
BB checks, UTG bets $12, Hero calls, BB folds.

River: 3 ($62, 2 players)
UTG bets $32, Hero calls.

Final pot: $126

He has A J RAISE IT UP!

I can't say I like it. But I don't think it's as bad as it looks either. I'd probably make it $25 on the flop when it's checked to me the majority of the time.

edit: actually I don't know about the flop bet there. I'd probably make it some of the time, and probably more like $30 or so. A lot depending on what I thought the other 2 guys had.

What happens when he shows down AK high here? You should raise the turn if you think he is weak, calldowns like this are massively -EV I have found.

Standard with your read.

I cant say I like this too much but given your read I dont want to bluff raise him either, and I love bluff raising. 3-1 odds ugh..