Last Lem - I forgot probably the most important thing in you planning.......what are the primary species your interested in? That will have the most important factor(s) in where you decide to go. Your not going to to chase Damara Land Dik-Dik in RSA or Mountain Zebra either. Likewise, you're not going to chase Mountain Rheabok or bushpig in Namibia. Then you'll need to think about if you want to hunt totally low fence or are you willing to do some high fence hunting.
In RSA for example, an operator has to have a MINIUM of 500 hectares under high fence to offer sport hunting. Then too, some areas have high fence properties in the tens and hundreds of thousands of hectares. The only time you'll see the high fence is when you enter and leave. The smaller places are mostly bought in game (put and take) and the larger high fence do have some natural breading and self sustaining herds. High fence properties are NOT all bad as they do allow the opportunity to take species that aren't native to an area - like taking waterbuck in the western Kalahari of Namibia. They are there only because they were bought and brought into a high fence operation and were never native to the area.
Anyway.....lots of things to consider and the planning is part of the fun after all.
