and remember you will have to anti-freeze your system for winter months.

Best practice for screening tenants is to come up with a system that is used for every applicant to make sure that each application is treated the same.

I'm not an attorney, but I believe that is a basic premise of US contract law that all States have by virtue of being part of the US legal system. 

You have to consider purchase and installation costs, plus any maintenance over the life-span of the system.

If you are going to tackle any of the systems such as roof, plumbing, electrical, & hvac you MUST MUST MUST get the work permitted.

Your tax advisor should have a good tax system that can do this. 

I'm learning the system.

Trust the system you’ve built on the due diligence you’ve done.

Depending on which real estate agent or company that you go with, they may have their own process of adding homes into the system (some require an email submission and others will allow everything through their website).

If acceptable to your tenants, what potential headaches might this system create for me?