I am planning a 60+ day tour of Africa that will begin in Cape Town, S. Africa, and then continue on to Namibia, Botswana, Zambia, Malawi, Tanzania, Kenya, Uganda. I have a fairly specific/thorough itinerary in mind but think I will need assistance with logistics, as I hope to travel primarily by land. I am not sure that I want to buy a car and drive this route on my own ... but doubt public buses will get me where I'd like to go. Are there highly regarded Pan-Africa tour companies that can help me work through the details? Best to use different outfits in each country?