I did a 14 day overland from Vic Falls to Johannesburg including Mozambique and it was the best two weeks I ever spent! We saw all the attractions you could ever want to see and had plenty of time to do our own exploring if we wanted to. There were plenty of opportunities to do our own activities and have as much fun as we could.
The camping facilities were amazing! Tents and food provided. Eat the food was amazing. Cooked breakfast every morning and dinners to die for.
Our tour leader Shingi was the most enthusiastic person I have ever met and is really knowledgeable, helpful and flexible. (We love you Mama). Our driver Jairos was equally lovely and drove our bus amazingly on the bumpy roads of Africa.
I would definitely recommend this tour for 18-30 year olds and is a must do adventure.