NL100 Overbet semibluff?

[Xanta]

Villain is relatively unknown but hasn't done anything out of the ordinary so far. Basically, if I fire again on the turn my stack is going in, so what bet size do you like to maximize FE? Is a check behind better? Do you change the flop raise size to make for more friendly stack sizes on the turn?

Notice that the turn makes me double gutted.

Party Poker, $0.50/$1 NL Hold'em Cash Game, 5 Players
LeggoPoker Hand History Converter

CO: $104.86
Hero (BTN): $122.08
SB: $99
BB: $79.03
UTG: $120

Pre-Flop: T[img]/images/graemlins/heart.gif[/img] J[img]/images/graemlins/heart.gif[/img] dealt to Hero (BTN)
UTG calls $1, <font color="red">CO raises to $5</font>, Hero calls $5, 2 folds, UTG calls $4

Flop: ($16.50) 7[img]/images/graemlins/heart.gif[/img] 3[img]/images/graemlins/diamond.gif[/img] K[img]/images/graemlins/heart.gif[/img] (3 Players)
<font color="red">UTG bets $4</font>, CO calls $4, <font color="red">Hero raises to $25</font>, UTG calls $21, CO folds

Turn: ($70.50) 9[img]/images/graemlins/club.gif[/img] (2 Players)
UTG checks, <font color="red">Hero bets $92.08 and is All-In</font>