78s from MP, how's my line with combo draw by turn

[tdx]

Party Poker, $0.10/$0.25 NL Hold'em Cash Game, 6 Players
LegoPoker Hand History Converter

UTG: $59.84
Hero (MP): $31.65
CO: $30.50
BTN: $25.04
SB: $24.40
BB: $37.12 <font color="blue">No real reads. Villain is 52/20 over 25 hands </font>

Pre-Flop: 7[img]/images/graemlins/spade.gif[/img] 8[img]/images/graemlins/spade.gif[/img] dealt to Hero (MP)
UTG folds, <font color="red">Hero raises to $1</font>, 3 folds, BB calls $0.75

Flop: ($2.10) 2[img]/images/graemlins/spade.gif[/img] 9[img]/images/graemlins/club.gif[/img] 6[img]/images/graemlins/diamond.gif[/img] (2 Players)
BB checks, <font color="red">Hero bets $1.25</font>, <font color="red">BB raises to $3</font>, Hero calls $1.75

Turn: ($8.10) 4[img]/images/graemlins/spade.gif[/img] (2 Players)
<font color="red">BB bets $5</font>, Hero calls $5

How's the flop and turn line? I think there isn't much point in raising the turn as when I call and hit, we're gonna play for stacks anyway. I'm interested how would you play a hand like this at NL50 &amp; NL100?