E - Guinea from Cape Town
Hi
My 1/2 c is except if money is not an issue - go with the airlines.
The average cost of a King Air 200 / PC12 will be in the order of R22-00+ per km - that excludes enroute landing fees and other costs like permits etc.
Don't even consider it with a Piston - it is looking for trouble with fuel availability.
My guess would say a charter like this will set you back between R150 000 and R250 000 if you are lucky?
Good luck
VG300