It would be a huge mistake to jump into a strategy without understanding how to deal with problems that may very well arise, more especially when the property is in tenant-friendly states. 

While it's something I think is not taken seriously enough by society and the law, it's just far to common amongst all classes of people.

Find a good landlord/eviction attorney that can help you draw up a lease, and help with any potential problems or disputes that arise.

For average investors without large amounts of capital to deploy this is a common approach to growing a portfolio.

And while that number varies somewhat, the most common number of different issues that minimizes risk is 21.  

Common area TV/internet. 

A common theme amongst those who are successful scaling a real estate portfolio and affiliate real estate businesses is organization skills that allow for systems to be implemented.

Sounds like we may have a few things in common on that! 

If you prefer to be hands-off with full-service management, then I'd plan on paying around 20% commission as that's pretty common.

Very common to have structural issues caused by soil movement.