Tricky situation w/AKs in BB

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Too passive or appropriate?

UTG is 34/17/1.2 in 30 hands
SB is 18/9/2.1 in 160 hands
(vp$ip/pfr/postflop AF)

Ultimate Bet 10/20 Hold'em (9 handed) converter

Preflop: Hero is BB with K[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/club.gif[/img].
<font color="#CC3333">UTG raises</font>, <font color="#666666">6 folds</font>, <font color="#CC3333">SB 3-bets</font>, Hero calls, UTG calls.

Flop: (9 SB) T[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">SB bets</font>, <font color="#CC3333">Hero raises</font>, UTG folds, SB calls.

Turn: (6.50 BB) 2[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets</font>, Hero calls.

River: (8.50 BB) 5[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets</font>, Hero calls.

Final Pot: 10.50 BB