AQo....why i suck at nl

[KitCloudkicker]

1/2 live.

UTG raises to $6....he's been raising his powerhouses to 10-20 so this likely means weakness. 5 people call and I see AQo in the BB. I decide that it would totally suck to play this hand OOP against 6 people so I make it $30. Most fold but an old guy who hates folding preflop calls.

Stacks: I have around $250. Old guy covers.

Flop is AK4 two spades (I have no spade). I bet $30 he calls.

Turn red 5. I bet $30 (too little? I didnt want to get stacked here) he calls.

River J of spades. I check, he bets $50...I...??