River decision with TPGK

[kong98]

This is from a Party 10+1, no reads.

Party Poker No-Limit Hold'em Tournament ($10 buy-in), blinds (t10/t15) <font color="#0000FF">(9 handed)</font> link

SB ($770.00)
BB ($625.00)
UTG ($285.00)
Hero ($800.00)
MP2 ($1310.00)
MP3 ($730.00)
CO ($1645.00)
Button ($1050.00)

Preflop: Hero is MP1 with K[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/spade.gif[/img].
<font color="#666666">2 folds</font>, Hero calls $15.00, <font color="#666666">2 folds</font>, CO calls $15.00, <font color="#666666">1 folds</font>, SB calls $5.00, checks.

Flop: ($45.00) 3[img]/images/graemlins/spade.gif[/img], 9[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, checks, Hero checks, <font color="#CC3333">CO bets $15.00</font>, SB calls $15.00, folds, Hero calls $15.00.

Turn: ($90.00) K[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">Hero bets $75.00</font>, CO calls $75.00, <font color="#CC3333">SB raises to $225.00</font>, Hero calls $150.00, CO calls $150.00.

River: ($765.00) T[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">SB bets $300.00</font>, Hero ???

I think he's got the king at this point. There are no real draws, and I don't think he raises the turn with QJ.

There are 6 hands I beat, 5 that beat me, and 1 I tie with. Do I call this (Leaving me with 245)? Push for 545? Play differently earlier?

Thanks,
Kent