NL50: OOP w a med overpair

[appears]

No stats/reads. Options:
1.) 3bet ; then the question is, what to do if 4bet? or even worse, what to do if called?
2.) call and evaluate turn ; then I suppose you would check+fold if a six or a straight-card fell, and bet+fold anything else?

$0.25/$0.5 No Limit Holdem
6 players
Converted at weaktight.com

Stacks:
UTG (<font color="#0000cc">$66.22</font>)
UTG+1 (<font color="#0000cc">$37.80</font>)
CO (<font color="#0000cc">$48.35</font>)
BTN (<font color="#0000cc">$96.15</font>)
Hero (<font color="#0000cc">$103.60</font>)
BB (<font color="#0000cc">$60.00</font>)

Pre-flop: ($0.75, 6 players) Hero is SB T[img]/images/graemlins/heart.gif[/img] T[img]/images/graemlins/diamond.gif[/img]
UTG calls $0.5, <font color="#777777">3 folds</font>, <font color="#cc0000">Hero raises to $2.5</font>, <font color="#777777">1 fold</font>, UTG calls $2

Flop: 3[img]/images/graemlins/diamond.gif[/img] 4[img]/images/graemlins/heart.gif[/img] 6[img]/images/graemlins/club.gif[/img] ($5.5, 2 players)
<font color="#cc0000">Hero bets $3.5</font>, <font color="#cc0000">UTG raises to $10</font>