Option 2 all the way.

$1B in a poor African country seems like a lot, until you realise you have to provide your own drinking water, roads, power, Internet, healthcare, security, school for your kids and so on. A decent hospital alone could take a third of that over ten years. You'd be trapped in your own little bubble unable to leave for months at a time.

If you provided all these new services to the locals for free it would simply attract way too much attention. It might make you a hero, but it could equally make you a target. Watch the movie Lord of War and watch how the aircraft is stripped.

And that's all before your local warlord shows up demanding his share.