blockbet or spew?

[hendal]

Villain is 46/15/1.22 over 143 hands.

Poker Stars, $0.05/$0.10 NL Hold'em Cash Game, 5 Players
LegoPoker Hand History Converter

Hero (UTG): $19.70
CO: $11.40
BTN: $2.70
SB: $5
BB: $13.75

Pre-Flop: K[img]/images/graemlins/diamond.gif[/img] A[img]/images/graemlins/heart.gif[/img] dealt to Hero (UTG)
<font color="red">Hero raises to $0.40</font>, CO calls $0.40, BTN calls $0.40, 2 folds

Flop: ($1.35) 5[img]/images/graemlins/club.gif[/img] A[img]/images/graemlins/club.gif[/img] 6[img]/images/graemlins/spade.gif[/img] (3 Players)
<font color="red">Hero bets $1.10</font>, CO calls $1.10, BTN folds

Turn: ($3.55) J[img]/images/graemlins/heart.gif[/img] (2 Players)
Hero checks, <font color="red">CO bets $1.80</font>, Hero calls $1.80

River: ($7.15) Q[img]/images/graemlins/diamond.gif[/img] (2 Players)
<font color="red">Hero bets $2.20</font>

So i have TPTK on flop. I decided to check the turn to keep the pot in control en to let villain think i missed and give him a chance to bet with a weaker ace.

River makes SD complete for some hands.

Blockbet usefull here or just spew?