Avoid operation of a private or commercial golf course, country club, massage parlor, hot tub facility, suntan facility, racetrack, gambling establishment, or a store whose principal business is the sale of alcohol for consumption off premises.The 4th requirement is of particular importance with regard to the real estate company in your hypothetical. 

Thanks for any answers or direction to a book or online source that would answer my question. 

Since he at the time had less then a month and half we said we will pick up a check when you get a new account setup instead of doing online payment for that short period.

Many states land records are on line.

I have tried cold calling and researching online, but I have been shooting in the dark and all the responses have been that they are not experienced with it.

Moving to Quickbooks Online and producing a balance sheet and P&L helped a lot, it then looks like any other business.My new guy looked at the cash flow as not contributing to retirement income until the mortgages are paid off (my net with mortgages is trivial).

Go online and verify the bills.

The retailers that sell mostly to homeowners and thhe big box stores usually carry the value prices options but not always the best long term values. 

From what you describe, assuming that existing rental income is honestly reported on your tax returns, you should be able to count both rental income from the existing property, and projected rental income from the other units in what you are buying, assuming a local REI-friendly lender with minimal/no overlays (those are the reason why you see conflicting stuff online). 

Can the store lose it grandfather rights?