NL50 QTo, flop top pair, called flop, bet turn when checked to?

[JROK777]

Full Tilt Poker
No Limit Holdem Ring game
Blinds: $0.25/$0.50
5 players
Converter

Pre-flop: (5 players) Hero is CO with Q[img]/images/graemlins/club.gif[/img] T[img]/images/graemlins/spade.gif[/img]
UTG calls, <font color="#cc0000">Hero raises to $2.25</font>, Button folds, SB calls, BB folds, UTG calls.

Flop: J[img]/images/graemlins/spade.gif[/img] 3[img]/images/graemlins/diamond.gif[/img] Q[img]/images/graemlins/spade.gif[/img] ($7.25, 3 players)
<font color="#cc0000">SB bets $5</font>, UTG folds, Hero calls.

Turn: 8[img]/images/graemlins/diamond.gif[/img] ($17.25, 2 players)
SB checks, <font color="#cc0000">Hero bets $12</font>, SB calls.

River: 5[img]/images/graemlins/spade.gif[/img] ($41.25, 2 players)
SB checks, Hero checks.

Results:
Final pot: $41.2

First off, anyone think it's a mistake to raise shorty with QTo here? I like it against a 100bb stack, but am wondering if its really profitable against a SS that you can't pressure. The blind player calling me was tight and set off a warning bell. Should I fire the turn here when checked to? I wasn't paying off a river bet in this hand as played. Comment on all streets...