Villains first orbit, hadn't done anything. Should the turn bet be harder? River b/f?

$0.25/$0.5 No Limit Holdem
9 players
Converted at weaktight.com

Stacks:
UTG cds tripaces ($51.10)
UTG+1 goldenboy373 ($164.35)
MP1 madmikemx ($35.85)
MP2 MAG-2605 ($47.55)
MP3 Hero ($50.00)
CO S J SHARKS 84 ($53.60)
BTN effin_reverend ($54.60)
SB BNH77 ($114.95)
BB Stack Stacker ($54.35)

Pre-flop: ($0.75, 9 players) Hero is MP3
4 folds, Hero raises to $2, S J SHARKS 84 calls $2, 3 folds

Flop: ($4.75, 2 players)
Hero bets $3, S J SHARKS 84 calls $3

Turn: ($10.75, 2 players)
Hero bets $5.50, S J SHARKS 84 calls $5.50

River: ($21.75, 2 players)
Hero b/fs?


Villain was 10/9/3 (over 150 hands) and folded to 3bets 67% of the time preflop. I am even money w/QQ-TT and AhKh so I felt it was okay to get it in. Should I just 2/3rds pot the flop?

$0.25/$0.5 No Limit Holdem
7 players
Converted at weaktight.com

Stacks:
UTG munchstop ($42.30)
UTG+1 Stack Stacker ($50.00)
MP cds tripaces ($50.00)
CO goldenboy373 ($72.90)
BTN HAIL HYPNO TOAD ($99.25)
SB Hero ($50.00)
BB TheDoud ($51.40)

Pre-flop: ($0.75, 7 players) Hero is SB
3 folds, goldenboy373 raises to $1.50, 1 fold, Hero raises to $6, 1 fold, goldenboy373 calls $4.50

Flop: ($12.50, 2 players)
Hero bets $6.50, goldenboy373 raises to $18, $11.50 to Hero ($37.50)?