Since the range was so wide and I'm not going to be doing it this year, I did not put in the effort to get a more precise figure.But my point of concern with buying a lot and building my own duplex is how to make it cash flow on par with the units I purchase and rehab.

Meth detection is amazingly precise, but the collection is not exact.  

I would also research Hurricane charts and flood zones. 

Here is a recent article that precisely answers that question. 

My locksmith has my key chart and I simply have him rekey the cylinders after each turnover.

Precisely!

Is there a chart we can look at?

Instead, the flow of money should follow the organizational chart (e.g., State 1 LLC --> holding company LLC --> State 2 LLC).  

However, most of people who go to places like Cabo, Puerto Vallarta, Playa del Carmen or Tulum precisely don't want to stay in all-inclusive resorts and there are pretty none there, as the lack of space and building regulations don't allow for it; they can only build them out of town.

The chart you posted shows equally high use in May (52ccf).