I have hunted with de Klerk twice, and they do a great job.Hunter_D we have just what you are looking for.
6 of the 8 ranches we own is all free range in the Kalahari.
Plenty of gemsbuck, springbuck, wildebeest, hartebeest, kudu, eland, warthogs, ostrich, steenbuck, duiker, etc. are on the open cattle ranches. On the 2 adjoining high fenced ranches (roughly 20 000 acres in one open block no internal fences) we have more species like lion, buffalo, giraffe, sable, roan, waterbuck, etc. We are situated in South Africa but close to where Namibia S.A. and Botswana get together. Just east of Kgalagadi Gemsbuck National Park.
You can hunt both areas as they are only 2 hours drive apart and then decide where you rather want to be.
Hans de Klerk