NL50: b/f or c/c or c/f river?

[Mr_Pathetic]

this hand was against a pretty big fish. i could see him playing AK,AJ,A9,AQ,99 like this. So with that said do you push river as pot is large already or do you c/c or do you c/f? all we have is a $30 left behind and all he can call us with is $25 so less then a half pot bet left on river. i don't think he can put me on a K here as my line suggests a big hand so far but i am not sure what he can call me with that i beat if i do bet out. OTOH he is a big fish. fact that all we got is $25 on river makes this even worse. I guess I am doomed to get it in?

Full Tilt Poker, $0.25/$0.50 NL Hold'em Cash Game, 6 Players
LeggoPoker Hand History Converter

SB: $42.75
BB: $13.25
UTG: $61.95
Hero (MP): $56.50
CO: $51.45
BTN: $115.40

Pre-Flop: J J dealt to Hero (MP)
UTG folds, <font color="red">Hero raises to $2</font>, <font color="red">CO raises to $4</font>, 3 folds, Hero calls $2

Flop: ($8.75) J[img]/images/graemlins/heart.gif[/img] A 9 (2 Players)
<font color="red">Hero bets $6.25</font>, CO calls $6.25

Turn: ($21.25) Q[img]/images/graemlins/heart.gif[/img] (2 Players)
<font color="red">Hero bets $16</font>, CO calls $16

River: ($53.25) T (2 Players)
<font color="green">Hero just vomited green goo.</font>