I go up stairs and knock, and knock, listen to hustle and bustle, knock again........Bottom line, the electric company cut off my tenant's electricity.

For example with heat, the fuel (electric, oil, natural gas, etc) all cost differently. 

If we add a mini split, we will also need to upgrade our electric panel, as it is currently full.

Also, if an older home make sure upgrade the electrical panel too.

Offering port-a-potties, well or cistern for water, and some amount of electrical power and wifi located strategically will be enough at first.

You'll want to do due diligence on the more expensive fixes such as foundation, structure, electrical systems, etc.

If they bring in bed bugs?

Sounds horrible and always so frustrating when you just needed a service to be performed.I had the issue with the electrical inspection for the new pool panel in AZ.

I would like to know what all qualifies as completely clean here- Electrical wiring is normal and no unlicensed modifications - Structural inspection is also clean.Seller is ready to discount the price by ~20% from market plus the cost to repaint the whole house What are other questions to ask and things to consider in this scenario?

Prices have jumped up pretty significantly the last few years; I had an addition done in 2021 just when lumber was starting to go berserk and I spent $100/sf *BUT* I use a lot of these contractors in my rental business and it wasn't a turnkey job - I did the electric, insulation, HVAC extensions, painting and trimwork.