Would also like to know general returns between the two given comparable risk levels.  

What is the arrangement of these four units (all stacked above each other, two on one level and two on another level, etc)?

A few high level points to keep in mind:- As Whitney said, you don't 1031 into an OZ Fund, but invest in the fund as a 1031 alternative.- Unlike a 1031 exchange you only have to invest the capital gains from your sale, rather than the entire amount of the sale. 

Say $20,000 to level and install gravel, limestone, caliche, etc road and parking as needed. 

Is there anyway to analyze a neighborhood on a more micro level?

Here's a link to an event on Jan 27th at 7 pm at Jailbreak Brewing Company in Laurel, MD:https://www.biggerpockets.com/...Investors or investor-curious of all levels welcome!

Local investors can have an upper hand when competiting for a deal with other investors, wholesalers, brokers, etc. 

The first 11 properties were all 100% financed in one way or another, because I did not have any money and had just started a new entry level low paying job.

Regardless of your level of plain/simple vs rustic vs fancy, you can do it for much less by just going to used furnishing stores (primarily).I used both 1) high-end second hand stores (meaning not primarily Goodwill and Salvation Army), and 2) lower level antiques stores where they have decent pieces for say < $500.

That level of hands-on involvement gave me a lot of confidence in both the property and the team.Rent To Retirement made something that initially felt overwhelming much more approachable.