Villain is TAG.. do you like my line here or not and why? Do you agree with turn cold call?

Party Poker No-Limit Hold'em, $ BB (9 handed) FTR converter on zerodivide.cx

Button ($215.70)
SB ($538.05)
BB ($355.13)
UTG ($198)
UTG+1 ($204.40)
MP1 ($189.25)
Hero ($159.80)
MP3 ($215.55)
CO ($162.70)

Preflop: Hero is MP2 with A, K. SB posts a blind of $1.
3 folds, Hero raises to $6, 4 folds, BB raises to $8, Hero calls $4.

Flop: ($21) 8, 6, 9 (2 players)
BB checks, Hero checks.

Turn: ($21) 8 (2 players)
BB bets $12, Hero calls $12.

River: ($45) 7 (2 players)
BB bets $22, Hero raises to $60...