Even before only every 5th deal or so would truly allow to recycle all cash and generate 25% equity. 

The beach has taken about a year and the jungle house will take about 4-5 years because we are paying off some seller financing with the revenue from the short term rentals.I would say that I can definitely make more money investing in real estate in the United States than in Costa Rica.

And any investor that is spending more time trying to figure out whether this "strategy" works or not as opposed to focusing on revenue-generating activities, really needs to look at their priorities. 

Then I sit down with a spreadsheet and analyze all parcels for an area and generate a list of target properties right from my computer.  

Second, when Boomers lose their jobs, they often simply retire, and they are an enormous generation

An argument can be made that you will generate a higher net worth there than say middle of nowhere Alabama.3.

An income account tracks revenue, while an operating expense account keeps daily costs organized.

Your 1.2-1.4m new multifamily may only generate 8k in rent tops.

But is the issue that the 100k you're describing isn't gross rents, its gross revenue?

This wouldn't be mortgage fraud (because you are living in the property), and you are able to make some revenue from the tenants, or am I missing something here?