I know investors in Ocala who have used been very happy with their services, and they definitely handle investor needs, including double closings, etc.

Google: Multi Family Laundry Service in xyz and you can see which one comes up.some have reviews and testimonials.

There are a lot of third party services that will do credit and background checks for you.

The other higher elevation is so far out in the country it would only service about 20 houses. 

We havent ever used one, but most of the services I have heard of just do them for a percent of savings.

I'm starting out with getting to know the Middle TN markets to better service our network of investors.  

As for collecting monthly payments you hire a servicer for $20-25 a month and they will make sure there is insurance on the property, as well as escrow taxes and insurance.  

I’ve found Investing in Real Estate 7th Edition and What Every Real Estate Investor Needs to Know About Cashflow and 36 Key Financial Measures to help me understand the concepts of analysis by leaps and bounds.

They are providing a good/great service to you, I would try to return the favor this way.

Pay on it while it's "in service" then repay it when you finance that property.