Best line to max value on monster flop

[CheapFlop]

This family pot flop came up and I had no idea what line to take to max value without getting f-d by a higher flush if another heart hit the board. My thought was to play it fast assuming perhaps one villain might have hit a set. Suggestions?

Poker Stars - No Limit Hold'em Cash Game - $0.10/$0.25 Blinds - 6 Players - (LegoPoker HH Converter)

SB: $7.75
BB: $25.10
UTG: $8.95
MP: $17.80
<font color="black">Hero (CO): $25.00</font>
BTN: $20.45

<font color="black">Preflop:</font> Hero is dealt 7[img]/images/graemlins/heart.gif[/img] 8[img]/images/graemlins/heart.gif[/img] (6 Players)
UTG calls $0.25, MP checks, Hero calls $0.25, BTN folds, SB calls $0.15, BB checks

<font color="black">Flop:</font> ($1) 4[img]/images/graemlins/heart.gif[/img] 6[img]/images/graemlins/club.gif[/img] 5[img]/images/graemlins/heart.gif[/img] (5 Players)
SB checks, <font color="red">BB bets $0.75</font>, UTG calls $0.75, MP folds, <font color="red">Hero????

[EMc]

Make it 4.5 to go

[wildzer0]

$4-4.50 oughtta be good here. No need to play it slow here.

[Gullanian]

Isn't $4-$4.50 a little too much? We want callers here, I have a feeling that will just get people folding. I'd go for $3 max.