Possible problems:
Education in a poor country may be highly regulated. You may need to bribe government officials all the time just to be allowed to teach anyone there. (Corruption may be one of the reasons why the country is so poor.)
If the country is poor, your former students will get very low salaries, if they decide to stay in their country. Ten percent of their income may be just enough to cover the costs of education, not enough to make a profit.
In the worst case (most poor countries), you can expect many of your students getting killed in some civil war or dying from medical problems, and maybe even you will be accused of witchcraft and burned.
Are you planning to teach all subjects alone? In a very poor country, you might have a problem to find sufficiently smart teachers.
All fair points, to which there might be workarounds... but the title of the post is "Post Ridiculous Munchkin Ideas".
Thus spake Eliezer:
It seems that many here might have outlandish ideas for ways of improving our lives. For instance, a recent post advocated installing really bright lights as a way to boost alertness and productivity. We should not adopt such hacks into our dogma until we're pretty sure they work; however, one way of knowing whether a crazy idea works is to try implementing it, and you may have more ideas than you're planning to implement.
So: please post all such lifehack ideas! Even if you haven't tried them, even if they seem unlikely to work. Post them separately, unless some other way would be more appropriate. If you've tried some idea and it hasn't worked, it would be useful to post that too.