I think that's a great approach I have a lot of clients who self manage have no issues at all.  

It's usually best to talk with your neighbors about your plans and get their support as one of the variance tests is that the requested relief does not cause a public health issue or alter the essential character of the neighborhood.Try googling "tests for a variance in [your state]" and talk with your local zoning department.

The only issue appears to be the missing breakers and it being turned off by the bank.

Since you’re considering converting the upper unit into a short-term rental, you may also want to implement strict rules around smoking or strong odors in your house rules to avoid future issues.

Is there any issues with doing this on investment properties that people have had in the past? 

So well within the 30 day trial period.However, they continue to bill my credit card for the service in spite of the confirmed cancellation.Has anyone else had any issues like this with them?

I hope this is a smooth process and I can remove them without any issues.

Are you aware of some actual legal authority that validates the IRS opinion on this issue?

The brother was fed up and needed to sell, but there was a significant issue.

I’m slowly learning how to identify soil types but like you said….we can’t afford to be wrong right now  jurisdictions are different all over the US.. many still just use perk tests  others do the soil samples so you just have to deal with your current area and regulations.