Roadtrip from JHB to Cape Town?

Firstly thank you for taking the time to answering my question! South Africans ROCK! I am one of Africa's children an I am planning a road trip to Cape Town in December. I did one last year from CPT-Beaufort Wes-Kimberley-Rustenburg and I was wondering what is an alternative trip I can make this year. I was thinking Bloemfontein-Colesberg-somerset wes and then CPT. Any advice? Worth 10 PIONTS!