South Africa is malaria free and easy to get around in. You can make in 6 months. Basics are probably taken care of, but get the Passport.
If you are taking your own weapons, make sure you review the paperwork from your outfitter about getting the weapons in.
Using thier guns can be an easy way to go.
Boots are key. Lots of walking. Pack lighter than you think - the camp will handle laundry. I take clothes for 3 days.
Never, ever, pack your boots in the checked luggage. And wear a hunting shirt and pants on the plane. If your bags get lost, you're still good to go with a borrowed gun.
Wear layers, it can be cold in the morning and shorts weather at 11:00 a.m.
You will have an awesome time.