Top pair versus possible straight (IP)

In an effort to become a better player, I figured I'd post some hands for feedback. I hope you all find this interesting. Here's the situation.

So I am in a work lunch-time game with blinds of .10-.20 (3!-handed). I know the following about the villian:

1. He never folds pre-flop
2. Slow-plays big hands, so if he raises PF the hand is marginal
3. Loves to check-raise
4. Loves to bluff
5. Won't give up on any draw

In addition, everyone has agreed that this is our last hand before getting back to work. This pretty much means everyone plays it pretty loose and fast.

Now the hand:

PreFlop:
Hero is in BB. Villian is in the SB. Button (remember 3-handed) limps. Villian limps. Hero looks down, sees AQo, and makes it 2.00 to go (It seems like a large raise but because it is the last hand I know at least the villian will call it). Button folds. Villian calls.

Flop(4.20):
Q-J-10 rainbow. Villian checks. Hero bets 2.50. Villian calls.

Turn(9.20):
The turn is a 8. Villian checks. Hero checks.

River(9.20):
The river is a 2. Villian bets 5.00. Hero calls.

So how is the line. What would you do differently?