Unfortunately, until you have a signed contract, any verbal message doesn't hold weight.  

I would consider living in one of the units as this will save you loads of money in rent you can use towards the property if need be. 

 I made a crap load of mistakes in the beginning too.

Electrical stuff is harder to determine without seeing inside of walls but you can take a peek at the electrical panel to see if it's dated and the load (if you know how)... a pic would work to share with your electrician.The rest is pretty visual and more cosmetic, bathrooms and kitchens are always the most important.

Now you are doing high risk for a lender on a small asset in a typically weaksuburban to rural location that if a default occurs the lender has not clue what to do with the property.Retirement accounts are typically protected funds and hard to go after even with a personal guaranty so not as much weight is put on them for liquid and net worth.

These people are your eyes and ears in the market and when you find a quality one, they're worth their weight in gold (or bitcoin lol).These are just the steps that I use to get more familiar w/ certain areas.

Loaded question.

This gave us a nice opportunity to run the new plumbing ground work, install a backflow regulator on our sewer line (nice to have on a 1915 house), and move the front and back sump pumps into a better position-Framed and finished the basement into the Airbnb unit-Dug the backyard down and installed a retaining wall at parking pad as well as a small deck and set of stairs off the rear entrance to the house that leads down to the parking pad-Opened up the main floor and removed a few non load-bearing walls. 

(completely different strategies but loads of good info to build you business!)

My options are to sell and weight for a downturn, refi and lose cash flow and my interest rate but again have cash for next property, or do nothing.