Here's a bit more in detail about how rates are calculated for DSCR loans:1.

Calculate depreciation only if you are filing your own tax returns.

I have been running the monthly cash flow using the Bigger Pockets rental calculator.

This is where the BP virtual community comes alive so its great that you're putting yourself out there.When comparing househack options in multiple markets, I'd recommend using @Jon Schwartz's househack calculator. 

Here's a bit more in detail about how rates are calculated for DSCR loans:1.

You may want to research now how the country taxes different types of investments(Equity, bonds, real estate, etc)That can tell you potentially what investments to have.The issue with potentially becoming a US citizen is that they will tax you on worldwide income.Therefore, if you get the citizenship and move out of the US, you may want to see if you would be exposed to US taxes, whether you will want to move back to the US and if you want to renounce your US citizenship.I agree that if you are not sure of living in the US, you may want to avoid doing items such as having a large balance in a retirement account that may be considered taxable by another country when you retire.Best of luck

When I calculate my own occupancy, I only include "sold" nights.  

Cash flow and taxable income are separate calculations.

This can reduce your taxable income and save you money on your taxes.Here are some of the key benefits of donating appreciated securities to charity:Maximize your charitable impact.

My go-to metric is the "5-year annualized ROI" provided by the BP Calculators.