Highend AirBNBs generally do well in high demand resort type areas. 

Just use that for short term plays.

As @Andrew Jones mentioned, there is a lot of growth which has caused a large increase in demand for properties above 635.

And some will take this further by saying that if there are landlord paid utilities, one can expect expenses to be an even higher percentage of rent (60% is a figure that gets tossed into play).Search the BP site to find threads that discuss those in greater detail.

Recently, the economy has gotten better in this area and the demand for work has gone up noticeably.

An attorney can help you with the paperwork and will probably be less expensive than an agent for those particular discreet tasks.A title company won't come into play until you have all of the documents you need in place already. 

Wanna play it safe buy a McDonalds.

How would you know the demand of multiunit compared to single family by renters in an area?

Serendipity at play I suppose that you responded. 

Playing it out, we retire, start taking distributions from the IRA, the property is paid off (or not), and all the income that's been accumulating over the years is sitting there -- still accumulating from rents coming in.