straight hits on monotone flop

Home game, $20NL, .25/50 blinds
Villain notes: Villain's all-in's are typically made hands, and are usually at LEAST 2 pair-trips or better. Villain certainly has at least a spade here.

Hero has about $30
Villain has about $30 as well.

Hero(MP2) is dealt:
7[img]/images/graemlins/heart.gif[/img]6[img]/images/graemlins/heart.gif[/img]
and limps in ... 3 limpers

Flop: ($2ish)
8[img]/images/graemlins/spade.gif[/img]9[img]/images/graemlins/spade.gif[/img]5[img]/images/graemlins/spade.gif[/img]

Hero leads for $2
MP3 folds
Villain raises all-in.

Hero folds.

Standard?

Here's what 2dimes says against other reasonable hands:

Vs. made flush - almost 0 to win
Vs. A/K flush draw w/ overcards - 61% for me to win
Vs. A/K flush draw w/ pair - 60% for me to win
Vs. set - 34% for me to win
Vs. 2 pair - 77% for me to win
Vs. Lower straight - near 100 for me to win

How do you play this with short or really deep stacks?