FTP Fifty-Fifty- I should be insta-calling this, right?

[DrBakunin]

I played two hands before this, c-bet the first one down unimproved, and the second I went a little too far with AKo (cbetting flop into 2 people, calling on turn, folding river unimproved).

I assume flop is standard, Turn/River thoughts much appreciated. Villain hasn't played a hand yet looking back on the HH. How does that change things?

Full Tilt Poker, NL Hold'em Tournament, 15/30 Blinds, 9 Players
LeggoPoker Hand History Converter

BTN: 1,845
SB: 1,840
BB: 3,545
UTG: 1,690
UTG+1: 2,710
UTG+2: 2,415
MP1: 2,650
Hero (MP2): 1,810
CO: 1,495

Pre-Flop: (45) 9[img]/images/graemlins/club.gif[/img] A[img]/images/graemlins/heart.gif[/img] dealt to Hero (MP2)
4 folds, <font color="red">Hero raises to 90</font>, CO folds, BTN calls 90, 2 folds

Flop: (225) K[img]/images/graemlins/heart.gif[/img] 5[img]/images/graemlins/club.gif[/img] 9[img]/images/graemlins/heart.gif[/img] (2 Players)
<font color="red">Hero bets 150</font>, BTN calls 150

Turn: (525) 6[img]/images/graemlins/spade.gif[/img] (2 Players)
<font color="red">Hero bets 450</font>, BTN calls 450

River: (1,425) 9[img]/images/graemlins/diamond.gif[/img] (2 Players)
Hero checks, <font color="red">BTN bets 1,155 and is All-In</font>