Regulations and situations change often. I would firmly suggest you book through a travel agent such as Steve Turner at Travel With Guns.
He can advise you of the current situation on permits, access to lounges, who to call when your luggage or guns don't make the flight, the best deals on tickets, cancellation and refund policies and a hundred other questions you'll have. All for a modest fee.
After about fifteen trips to africa, I can handle booking my own flights, but I still let Steve and Fred handle it.
