Top Set : bet flop or c/r flop or c/r turn?

[Scipio]

Hero has 100BB Stack.

Known players:
<font class="small">Code:</font><hr /><pre>Position (Stack):
vp$ip pfr ats folded bb
af wts w$sd hands

CO (410.10):
22.4 16.6 46.2 22.8
7.2 28.9 52.6 1044
</pre><hr />
2.00/4.00 No-Limit Hold'em <font color="blue">(6 handed)</font>

Preflop: Hero is BB with 9[img]/images/graemlins/spade.gif[/img], 9[img]/images/graemlins/heart.gif[/img]
<font color="grey">2 folds</font>, <font color="red">CO raises to $14.00</font>, <font color="grey">2 folds</font>, Hero calls.

Flop: ($30.00) 2[img]/images/graemlins/club.gif[/img], 2[img]/images/graemlins/spade.gif[/img], 9[img]/images/graemlins/club.gif[/img] <font color="blue">(2 players)</font>
Hero checks, <font color="red">CO bets $20</font>, Hero calls.

Turn: ($70.00) Q[img]/images/graemlins/club.gif[/img] <font color="blue">(2 players)</font>
Hero checks, CO checks.

River: ($70.00) T[img]/images/graemlins/diamond.gif[/img] <font color="blue">(2 players)</font>
<font color="red">Hero bets $50</font>, CO calls.

Final Pot: $170.00