One hand - two questions

[Laetus]

1 ) Do you c-bet this flop? What is your plan on turn if you opt to check flop?

2 ) Is my river call spewy?

Reads:
SB 21/17/3.5
BB 21/8/1.3 after 50 hands and I have seen him CC w/ AKo pre , co vs button and he called c-bet on Q-high flop (and the hand was checked on turn and river)
I myself is playing TAG.

Cryptologic
No Limit Holdem Ring game
Blinds: $2/$5
4 players
Converter

Pre-flop: (4 players) Hero is Button with 9[img]/images/graemlins/diamond.gif[/img] 5[img]/images/graemlins/diamond.gif[/img]
UTG folds, <font color="#cc0000">Hero raises to $20</font>, SB calls, BB calls.

Flop: K[img]/images/graemlins/heart.gif[/img] 6[img]/images/graemlins/heart.gif[/img] 9[img]/images/graemlins/spade.gif[/img] ($60, 3 players)
SB checks, BB checks, <font color="#cc0000">Hero bets $44</font>, SB folds, BB calls.

Turn: 7[img]/images/graemlins/spade.gif[/img] ($148, 2 players)
BB checks, Hero checks.

River: 5[img]/images/graemlins/spade.gif[/img] ($148, 2 players)
<font color="#cc0000">BB bets $75</font>, Hero calls.

Results:
Final pot: $298