We don’t know any PMCs to recommend in the area mentioned, but since selecting the wrong PMC is usually more harmful than selecting a bad tenant, you might want to read our series about “How to Screen a PMC Better than a Tenant”:https://www.biggerpockets.com/member-blogs/3094/91877-how-to-screen-a-pmc-better-than-a-tenant-part-1-services-and-processesWe recommend you get management contracts from several PMCs and compare the services they cover and, more importantly, what they each DO NOT cover.

Different groups might have different rules and habits.

If you fall in the habit of not finishing one thing you will fall in the habit of not finishing anythingIn closing, it is important to have partners, but take your time to find the best partner that shares your values and vision.

Tenant acknowledges that Landlord’s adoption of this smoke-free policy and the efforts to designate the Premises as smoke-free do not in any way imply the Premises are any safer, more habitable, or improved in terms of air quality standards than any other rental Premises.

How do I do it so the seller doesn’t need to get involved or be harmed financially?

The IRS has a habit of being suspicious of those. 

I knew I shouldn't ask questions about personal habits, etc., but when I showed my rental unit, I talked about my family's habits.

Big difference is your only going to get a cease and desist and have to hire an attorney to keep you from further legal harm.

We don’t know any PMCs to recommend in the area mentioned, but since selecting the wrong PMC is usually more harmful than selecting a bad tenant, you might want to read our series about “How to Screen a PMC Better than a Tenant”:https://www.biggerpockets.com/member-blogs/3094/91877-how-to-screen-a-pmc-better-than-a-tenant-part-1-services-and-processes

when you have a city that developed land / lots for 2 million in habitants and then over 1 million left over time  you have surplus worthless land  ..