South Africa aren't gonna play 5 batsmen and their keeper and 5 fast bowlers. Makes no sense whatsoever. If you play 5 front line fast bowlers, one will be underused.
That said the bowlers with the best FC record at the Wanderers are Viljoen, Morris, Abbott and Rabada. But would South Africa consider leaving out Morkel, when Steyn and Philander are already missing? Very unlikely.
Duminy will come in the little Bavuma might be forced into opening