OK here are some more details:
Aircraft Cessna T210N, max fuel 720 lbs, 80pph on economy power, a reasonable alternative was available on each leg.
Route down was Jerez - Lanzarote - Nouakchott - Bamako - Ouagadougou - Lome - Accra - Sao Tome - Principe - Libreville - Lubango - Ondangwa.
Then round and round in Southern Africa (Namibia - South Africa -Zambia - Malawi - Mozambique) where there are few issues although each country requires a permit. Flying in to game lodges works well.
Route up was Johannesburg - Beira - Dar es Salaam - Nairobi - Djibouti -Port Sudan - Luxor - Iraklion - Luqa
Overall plan ahead, fly lowish level VFR to see the sights, look the part, visas not required for crew, use agent for obtaining permissions, don't be surprised by silly prices, understand the ITCZ, mobile phone works almost everywhere, anti malaria pills made me feel funny so I stopped taking them.
Fuel was available except Sao Tome/Principe/Lubango. HF was required on the Libreville - Lubango leg to contact Brazzaville. No single engine over water is allowed in Gabon.
Three of us on the way down, one on the way back. Almost everyone we met was helpful and anticipation of hassle/bureaucracy was worse than actuality
Bill Hall did something similar:
http://www.airsquadron.org/pages/afr...ind_report.htm