I’m not really sure how to answer this but I’ll give it a go haha-
I would suggest flying into Cape Town, firstly because of the high crime rates in Johannesburg put me off straight away, also you can see table top mountain-I hear it is beautiful! Unfortunately I wasn’t able to see for myself due to fog. We also went cage diving to see the great white sharks in a town near by, which was awesome!! If you are up for it how about bungee jumping at Bloukrans Bridge, or you could just take a look. We spent a week in the African outback which was amazing-I totally recommend that! As there was 6 of us travelling together, we rented a large house with seperate huts, we also had our own tracker/guide, chef and cleaner. We saw lots of the nature near to our huts and on treks too, including the 4 of the big 5-Black Rhino, Buffalo, Lion, Elephant. We had a leopard in the area apparently but we never saw it. Another thing I also would recommend would be Spier, it was rather expensive but we were able to stroke Cheetahs and hold wild birds of prey there, we also experienced native African dancing and lots of celebrations. Everyone was very welcoming there and I loved it-but as I said it’s a bit pricey! I have family in Cape Town so we stayed with them for most of the time but as soon as we started travelling we booked one night stays in little bed and breakfasts or guests houses. I’m not sure how but my dad found all of these places and organised the whole trip. We travelled from Cape Town along the coast and cutting off Johannesburg we went to Lesotho and Swaziland then 4 of us went to Namibia for the weekend before travelling back down to Cape Town. It took him a year to organise our month trip but I am sure you will find many joys from visiting the country. If you have any more queries then I’m here to help :)