KQo UTG - not sure how i shouldve played this turn/river

[cs3]

Im dealt KQo UTG. no good reads as the villian just sat down.

Party Poker No-Limit Hold'em, $ BB (6 max, 6 handed) FTR converter on zerodivide.cx

Button ($66.52)
SB ($44)
BB ($41.15)
Hero ($50)
MP ($68.19)
CO ($124.33)

Preflop: Hero is UTG with K[img]/images/graemlins/heart.gif[/img], Q[img]/images/graemlins/club.gif[/img]. SB posts a blind of $0.25.
<font color="#CC3333">Hero raises to $2</font>, <font color="#666666">2 folds</font>, Button calls $2, SB (poster) calls $1.75, <font color="#666666">1 fold</font>.

Flop: ($6.50) 8[img]/images/graemlins/club.gif[/img], 5[img]/images/graemlins/heart.gif[/img], 2[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, Hero checks, Button checks.

Turn: ($6.50) Q[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">SB bets $2</font>, <font color="#CC3333">Hero raises to $8</font>, Button folds, SB calls $6.

River: ($22.50) 6[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, HERO???

i know some people will blast tme for checking the flop, but i had made several contiuation bets previously that went uncalled, and i didnt want to become predictable... especially not OOP with a hand that was losing to Ace high.

so what do you think oabout the turn? raise ok? hsould it be bigger? or jsut call?

and what about the blank on the river? doe my bet look out of line?