AA, too weak?

Villain is 48/17 on ~30 hands. So again no good reads.

PokerStars No-Limit Hold'em, $0.10 BB (7 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

UTG ($17)
MP1 ($4.20)
MP2 ($5.75)
CO ($9.75)
Hero ($9.80)
SB ($10.75)
BB ($12)

Preflop: Hero is Button with A, A.
UTG raises to $0.5, 3 folds, Hero raises to $1.3, 2 folds, UTG calls $0.80.

Flop: ($2.75) 6, J, 7 (2 players)
UTG checks, Hero bets $1.5, UTG calls $1.50.

Turn: ($5.75) 3 (2 players)
UTG checks, Hero bets $4, UTG raises to $8, Hero calls $3 (All-In).

River: ($20.75) K (2 players, 1 all-in)

Final Pot: $20.75

I was hoping he had KK/QQ or even AJ... althought now that I think of it I guess he would've re-raised preflop with KK. I'm definately aware of the cruel possibility of a set. Is this too weak? Raise more PF? What about flop? Lay down after re-raise on turn? I also have a feeling that the turn bet was a bit too much... Any comments appreciated. Thanks in advance.

$1.50 preflop.

$2 on flop.

nh