NL25SH OESD OOP 4 handed Flop

[stever1k]

PokerStars No-Limit Hold'em, $0.25 BB (6 handed) Poker Stars Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

UTG ($7.70)
MP ($30.30)
CO ($14.70)
Button ($24.30)
Hero ($31.10)
BB ($15)

Preflop: Hero is SB with 9[img]/images/graemlins/club.gif[/img], T[img]/images/graemlins/diamond.gif[/img].
UTG calls $0.25, MP calls $0.25, CO calls $0.25, <font color="#666666">1 fold</font>, Hero completes, BB checks.

Flop: ($1.25) 8[img]/images/graemlins/club.gif[/img], 4[img]/images/graemlins/spade.gif[/img], 7[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(5 players)</font>
Hero checks, BB checks, <font color="#CC3333">UTG bets $1.5</font>, MP calls $1.50, CO folds, Hero calls $1.50, BB folds.

Turn: ($5.75) 6[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets $3.5</font>, UTG folds, MP calls $3.50.

River: ($12.75) J[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $6</font>, MP calls $6.

Final Pot: $24.75

I completed here, because BB had 0 PFR during the first few orbits. MP is a donk, played 45/4/0.6 for about 50 hands.

On the 2nd view I'm not very satisfied with the hand: the ~3:1 on the flop is really thin, there is a FD possible and I'm OOP. 2nd, my turnbet is too small: I should bet at least 4.5-5. And I would guess the river bet is to small?
Any suggestions?