200nl, another 200xbb AK hand

[ycjason]

villian is about 21/17/2 over 900 hands
he 3 bets light, and have 3 bet me a lot of times on this table as he had position on me most of the time, I have generally folded to his 3 bet because we are so deep and I didn't want to play a large pot OOP

please comment on all street, I normally 4 bet with AK here and call a push, but feeling uncomfortable doing that being this deep so I just called. Oh, my own image on the table is pretty loose aggressive, villain has played enough with me to know that I raise/3 bet/4 bet pretty light, but he would also know I call push pretty light as well, so that should balance out a little as to whether he would want to push me allin.

Poker Stars - No Limit Hold'em Cash Game - $1/$2 Blinds - 5 Players - (LegoPoker HH Converter)

SB: $481.75
BB: $31.80
UTG: $212.75
Hero (CO): $477.65
BTN: $171.65

Preflop: Hero is dealt K[img]/images/graemlins/heart.gif[/img] A[img]/images/graemlins/spade.gif[/img] (5 Players)
UTG folds, <font color="red">Hero raises to $8.00</font>, BTN folds, <font color="red">SB raises to $26.00</font>, BB folds, Hero calls $18.00

Flop: ($54) 3[img]/images/graemlins/spade.gif[/img] 8[img]/images/graemlins/spade.gif[/img] 5[img]/images/graemlins/diamond.gif[/img] (2 Players)
<font color="red">SB bets $38.00</font>, Hero calls $38.00

Turn: ($130) 5[img]/images/graemlins/club.gif[/img] (2 Players)
SB checks
Hero: ? clearly I should bet here, this is the whole purpose of floating on flop, how much should I bet here, and if called, what's my river line?