NL100 KJ misses SD, hows my bluff on the river?

[ronitonline]

Not much on villian besides I saw him try to make a call with bottom pair in a pretty big pot on my 2nd hand on the table, doesnt seem like a great player.
This is about 20 hands in.

Full Tilt Poker
$0.50/$1 No Limit Hold'em Ring Game
6 Players
LegoPoker Hand Converter

<font color="black">Stack Sizes</font>
SB: $155.1
BB: $122.35
Hero (UTG): $101.40
MP: $168.80
CO: $172.40
BTN: $98.50

<font color="black">Preflop:</font> K[img]/images/graemlins/diamond.gif[/img] J[img]/images/graemlins/diamond.gif[/img] ($1.5, 6 players)
Hero calls $1, MP folds, <font color="red">CO raises to $4.50</font>, BTN folds, SB folds, BB folds, Hero calls $3.50

<font color="black">Flop:</font> 6[img]/images/graemlins/club.gif[/img] Q[img]/images/graemlins/club.gif[/img] T[img]/images/graemlins/heart.gif[/img] ($10.5, 2 players)
<font color="red">Hero bets $6</font>, <font color="red">CO raises to $18</font>, Hero calls $12

<font color="blue">Villian sat there and almost let his timer run out then raised, I thought this was either weakness or strength but most likely weakness.</font>

<font color="black">Turn:</font> 6[img]/images/graemlins/club.gif[/img] Q[img]/images/graemlins/club.gif[/img] T[img]/images/graemlins/heart.gif[/img] [3[img]/images/graemlins/heart.gif[/img]] ($46.5, 2 players)
<font color="red">Hero bets $22</font>, CO calls $22

<font color="blue">Again his timer almost ran out before he called. I defenitly took that as weakness.</font>

<font color="black">River:</font> 6[img]/images/graemlins/club.gif[/img] Q[img]/images/graemlins/club.gif[/img] T[img]/images/graemlins/heart.gif[/img] 3[img]/images/graemlins/heart.gif[/img] [T[img]/images/graemlins/spade.gif[/img]] ($90.5, 2 players)
<font color="red">Hero bets $50</font>

<font color="blue">I put Villian on 99 or JJ here who didnt believe me, I figured even if he thought I had a 10, I just got there.
What do you think of bluffing here, and also the size of my bet?</font>