When I left, I couldn’t bring any of it with me so so left it to be used by whoever I rented the place out to.Now the dryer is on its way out.

Question I have is can I do a walk through before buying a home, bring in a GC, or even have it inspected?

Or I could do 10% down at 40k down which is more reasonable, bringing me to about $200/mo margin. 3) Hold.

The value is based on the what it currently brings in - expenses I got the impression they might not have a n accurate t-12.

Your advantage and added value is in bringing the property to the attention of the end buyer who would not know about the property otherwise. 

You can negotiate what the right split is depending on what each of you are bringing to the table.

We’re working on bringing a C/D borderline 3/1 home up to a B/C right now.

Easy to solve: either add a programmable t-stat, or you can add a vent-less gas wall heater to bring the temp up quickly and cheaply, then let the electric take over on "cruise control". 

Where are companies typically lacking in resources that they’d be willing to bring on a part time person?

In slow times, sure bring a bunch and let them do business and fight for the sale.