Victorious 2014 ICC U-19 World Cup captain could open with Elgar; Phehlukwayo also included in South African 13-man squad.
Bangladesh announce 15-man squad; Shakib Al Hasan rested for tour of South Africa.
Mushfiqur, Sabbir, Mehedi and Mustafizur also move up.
Australia is now on 97 points, the same as New Zealand, but is behind on decimal points.
Lyon, Warner power series-saving Australia victory; Lyon takes best figures by an Australian in Asia
The visitors were 377 for nine, leading Bangladesh by 72 runs after David Warner smash back-to-back hundred.