Blind defence - B/F or C/C or C/F on the river?

[Sidomija]

Villain is 30/22/1.42 (150 hands) went to SD: 36%

Absolute Poker
Limit Holdem Ring game
Limit: /
6 players
Converter

Pre-flop: (6 players) Hero is BB with 9d 10s
3 folds, [color=#cc0000]Button raises</font>, SB folds, Hero calls.

Flop: 5h 3h 10h (4.67SB, 2 players)
Hero checks, [color=#cc0000]Button bets</font>, [color=#cc0000]Hero raises</font>, Button calls.

Turn: 4c (4.33BB, 2 players)
[color=#cc0000]Hero bets</font>, Button calls.

River: 8h (6.33BB, 2 players)
[color=#cc0000]Hero bets</font>, Button calls.

Results:
Final pot: 8.33BB

[yourface]

c/f
he's either got a pair or a flush and most people don't turn pairs into bluffs