I got a very good price on the building (about $25k per door), but it was a ton of work as in addition to tenant issues, there was TONS of physical distress (foundation repairs, sewer line and water line repairs, electrical upgrades, new roof, and apartment renovations needed for all units). 

I don’t worry about the electric because I use that for short term rentals.

Youtube is the second largest search engine, and has videos on basically every subject known to man.

I have almost an acre and would love to get some upgrades done on the electrical and start specking out an ADU but because of my experiences so far with everyone from electricians to handymen to landscapers I'm holding back for a while.

Please study engineering and you’ll have more of a grasp of why measuring amperes (electricity) or volume (water or natural gas) lends itself to reasonable precision.  

You can determine what a decent salary would be for someone in your market and then reverse-engineer to see if what you're paying as a salary, plus the projected performance commission, will get you there.

I am not your structural engineer so take what I say (and others most likely) with a grain of salt and best to get a contractor to come take a look at it.

Therefore, we can be manipulated or our judgement can be affected by anything that happened during the day.It's called social engineering and it has multiple variants.

Is there an energy company (electrical and Gas) that will do roll overs?

Lawyers, engineer, architect, expeditor, surveyors, etc pile on the fees quickly.