I have a best friend during the elementary to high school days who is doing a very similar thing in Madagascar. He was a genius in math which he majored in at University of Chicago and ended up making millions as an analyst for some huge mutual fund companies living in NYC and Boston. He retired from it all in his late 30s, got a masters in forestry from University of Minnesota, and has been in Madagascar helping them replant a forest for last 12-14 years. Lives in a hut practically in a small remote village and very isolated. Married a local women half his age and became a dad in his late 40s. Pretty incredible story.
One of the things that struck me from his tales there are how long it takes to travel. Being 50 miles from somewhere is a long journey due to roads and transportation. Also scary when there are medical issues for same reasons. You are on your own.