If you haven't seen it, I'd strongly recommend Vice's guide to Liberia - http://www.vice.com/the-vice-guide-to-travel/the-vice-guide-to-liberia-1
Re: Psychic Maelstrom: I don't think you need it. I think the Psychic Maelstrom is a good setting spin for AW, but you don't really need the setting spin for modern day Africa because its very unusual as an RPG setting.
If you're really set on having a "Open your Brain" move, I would turn it into "Follow the Money" (Trust me, only weird people do this.) which I would like because it adds emphasis on the corruption and whatnot.
Alternatively, you could plop down the Psychic Maelstrom whole sale, and say "Its David Lynch's Africa."
Yes I'm not 100% sure how far I'll dial back the supernatural. The Brainer is obviously out (real life mind control is probably just manipulation) but the Hocus certainly is not (Frenzy is even more powerful in a setting where people listen to radio and watch TV). I think I'll ask the players about moves that could fill a narrative role as well as a supernatural (PCs having 6 hp, Divine protection, Lost, Visions of Death), if all the romantic elements are removed AW is probably not the right system at all.
Opening ones brain is a useful move game wise, it's in my opinion a way to just look at the MC with a blank stare without having to eat a hard move. On the other hand, not having it might make Africa seem more real and instill people with a sense that the world is a serious place and no mystic entity is just gonna give you guidance.
Following the money sounds like an excellent move but how would it be done in the fiction? Like, going around asking who gave guy X a new car and going through accounts or just an intuitive thing like "well obviously this gang is funded by those guys, everybody knows that"?
Btw, that link looks great! I have awful bandwidth atm though.
And to address that OP, I would recommend AK-47 by Larry Kahaner and License to Kill by Leonard Young Pelton. The Vice Guide to Liberia reminds me of a documentary Alexandre Trudeau made, Liberia: The Secret War. Apparently he's also made a doc about Darfur, but I haven't seen it.
Those seem like good reads on top of being informative. His name is Robert Young Pelton though, Leonard only shows a story-games post ;)
OT: Darwins nightmare is a documentary that has good AW fuel even for a regular AW game, it's basically a ready made Front (it suffers a bit from misery tourism though).