Is this river ok to fire?

[HitMe1Time]

Absolute Poker
No Limit Holdem Ring game
Blinds: $0.50/$1
5 players
Converter

Hero: $200
Villain: $300

Pre-flop: (5 players) Hero is SB with 7[img]/images/graemlins/club.gif[/img] J[img]/images/graemlins/club.gif[/img]
2 folds, <font color="#cc0000">Button raises to $4</font>, <font color="#cc0000">Hero raises to $14</font>, BB folds, Button calls.

Flop: 4[img]/images/graemlins/club.gif[/img] 2[img]/images/graemlins/club.gif[/img] K[img]/images/graemlins/diamond.gif[/img] ($29, 2 players)
<font color="#cc0000">Hero bets $20</font>, Button calls.

Turn: 5[img]/images/graemlins/spade.gif[/img] ($69, 2 players)
Hero checks, Button checks.

River: 8[img]/images/graemlins/spade.gif[/img] ($69, 2 players)
<font color="#cc0000">Hero bets $60</font>

Results:
Final pot: $69