RR AK hits big draw on turn

Hows this semibluff? Villain is 25/20/1.43 and has $66 left.

PokerStars No-Limit Hold'em, $1.00 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

CO ($92.10)
Button ($103.25)
SB ($153.45)
Hero ($98.50)
UTG ($212.15)
MP ($89.65)

Preflop: Hero is BB with A, K.
2 folds, CO raises to $4, 2 folds, Hero raises to $12, CO calls $8.

Flop: ($24.50) 6, 7, Q (2 players)
Hero bets $14, CO calls $14.

Turn: ($52.50) 4 (2 players)
Hero bets $72.5 (All-In)

Final Pot: $191.10

Oops wrong place. I made a new one here.

http://www.flopturnriver.com/phpBB2/...=449377#449377