Early AK in Nightly 100K

[dmk]

How bad? I've found myself being sort of annoyingly passive early recently. Better line? River bet ok?

Only 6th hand, so no reads obv

PokerStars No-Limit Hold'em Tourney, Big Blind is t20 (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

UTG+1 (t3070)
MP1 (t2930)
Hero (t3020)
MP3 (t2830)
CO (t3300)
Button (t3120)
SB (t2730)
BB (t3000)
UTG (t3000)

Preflop: Hero is MP2 with A[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/spade.gif[/img].
UTG calls t20, <font color="#666666">1 fold</font>, <font color="#CC3333">MP1 raises to t60</font>, Hero calls t60, MP3 calls t60, <font color="#666666">3 folds</font>, BB calls t40, UTG calls t40.

Flop: (t310) 5[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/club.gif[/img], 4[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(5 players)</font>
BB checks, UTG checks, MP1 checks, <font color="#CC3333">Hero bets t220</font>, MP3 calls t220, BB folds, UTG folds, MP1 calls t220.

Turn: (t970) J[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
MP1 checks, Hero checks, MP3 checks.

River: (t970) 2[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
MP1 checks, <font color="#CC3333">Hero bets t300</font>, MP3 calls t300, MP1 folds.

Final Pot: t1570