The upside if I end up keeping this property is it should be maintenance free for years with new roof, furnace, hot water tank, electrical completely re run, and plumbing.

What is your trade, I would say niche, wood work, electrical etc?

I might have to take you up on your offer and bug you once or twice regarding some questions.

Also if you talk to them they have some plumbing and electrical guys that they know that can even work with you if you want or give you rough estimates.

I'm a contractor here in Indy specializing in plumbing, electrical, tile floors, custom tile walk in showers however I offer full service minus HVAC. 

Contractors licensed for specific skill sets, such as electric or framing, are sometimes used as subcontractors by a general contractor, and will sometimes be used by you for specific sets of small repairs.

Also I cover the shared area water and electric with coin op laundry.

How much electrical service does each unit have?

I have to do the due diligence with the city to make sure the allowances for water, sewer, electric infrastructure can be accommodated.

The electrical wiring is a mess, there is significant evidence of water intrusion, and there are improperly installed support beams.