Best strategy to make 200K/Yr Cash Flow in 10 Yrs

[Jonathan E Francois]

I am planning to move to a developing country in 10-15 years to pursue a passion of mine in the medical field. However, I would like to make 200K/yr in passive income by the time I move abroad to be financially secure for my family. Is it a realistic goal? If yes, What type real estate is best: Residential real estate (single families + small MultiF) vs Commercial Real estate vs Self storage? Which one will provide the most cash flow and require the least amount oversight? 

All Advice would be greatly appreciated. Thank you!