Sawabona!
You are getting good advice. Just a couple more things to consider. Don't worry so much @ sub MOA accuracy. 1-2" at 100 yards is plenty good. Also, make sure it's an ammo that is easy to find and from a name brand with a track record. Have sone fun & experiment! None of has a crystal ball, but think if it is a product you can still get in a few years (Like the Norma Oryx, Federal, Nosler Premium ammo, etc..., stay away from off brands). I'd also, after you find a load you like, buy a case of it, stick with it, and learn how it shoots under different conditions & elevations. South Africa has much of the country at @ 6000' elevation. The bullets will shoot a bit higher that where I am here at sea level so be prepared possibly re-zero your rifle when you arrive.
Enjoy your hunt and remember, shot placement is paramount.