@Lance Turner recommend designing what you ultimately want it to be and then work backwards to create reasonable Phases to get it there.How much will insurance cost for all the different uses?

Please note the information provided below is a layman's definition designed to provide a basic understanding for the general audience.

Please note the information provided below is a layman's definition designed to provide a basic understanding for the general audience.

That's a well-designed portfolio from a geographical diversification standpoint. 

Durable, low maintenance interior finishes.

I figure if I can get really good at helping people design shared home plans, then maybe I can create a business around it.There’s no pressure or obligation here—this is just an opportunity for me to learn and help. 

The other group making good money have a business designed to get some portion of YOUR money.

Since you're a U.S. citizen living abroad, non-QM (non-qualified mortgage) programs designed for foreign nationals might be an ideal solution for your situation.

I have 3 apts and I started out with furnished rentals as I am an Interior Designer. 

Conventional mortgages are designed for individuals to purchase homes, not for businesses.