Probably standard play for a flopped pair of aces

Inter Hold'em NL ($0.25/$0.50) full ring

This isn't too difficult of a hand, but I'd like to see what the SSNL forum thinks of how I play when I flop top pair against a weak opponent. Lately, I've been playing a few $50 games (and playing tighter, too), up from my normal $25's, and I'd like to make sure my fundamentals are good.

My opponent 27/5 over 37 hands. It's a small sample size, but he seems rather loose/passive from my observation as well.

Seat 1: SITOUT1 sits out
Seat 2: BB ($37.31 in chips)
Seat 3: SITOUT2 sits out
Seat 4: KING ($60.20 in chips)
Seat 5: UTG+1 ($57.65 in chips)
Seat 6: MP($86.80 in chips)
Seat 7: MP2 ($17.31 in chips)
Seat 8: LP ($77.55 in chips)
Seat 9: CO ($60.74 in chips)
Seat 10: SB ($57.40 in chips)
SB: posts small blind $0.25
BB: posts big blind $0.50
----- HOLE CARDS -----
dealt to KING [T[img]/images/graemlins/diamond.gif[/img] A[img]/images/graemlins/spade.gif[/img]]
KING: raises to $2
UTG: folds
MP: folds
MP2: folds
LP: folds
CO: folds
SB: calls $1.75
BB: folds
----- FLOP ----- [A [img]/images/graemlins/club.gif[/img] 8 [img]/images/graemlins/diamond.gif[/img] 2 [img]/images/graemlins/club.gif[/img]]
SB: checks
KING: bets $3
SB: calls $3
----- TURN ----- [A [img]/images/graemlins/club.gif[/img] 8 [img]/images/graemlins/diamond.gif[/img] 2 [img]/images/graemlins/club.gif[/img]][4 [img]/images/graemlins/heart.gif[/img]]
SB: checks
KING: bets $8
SB: calls $8
----- RIVER ----- [A [img]/images/graemlins/club.gif[/img] 8 [img]/images/graemlins/diamond.gif[/img] 2 [img]/images/graemlins/club.gif[/img] 4 [img]/images/graemlins/heart.gif[/img]][7 [img]/images/graemlins/diamond.gif[/img]]
SB: checks
KING: bets $15
SB: folds
Returned uncalled bets $15 to KING
KING: doesn't show hand
KING collects $25.20 from Main pot