The best place to do your flight training is at 43 Air School. They are a highly professional school. The area you fly in is also very beautiful. Their courses are very well structured and the training is the best! If you are considering to maybe do your CPL at a later date, then you can not go to any other place.
Did my CPL there and I had the best time of my life. Yu are out of the big rush of things, but not to far from big cities. The Genral Flying areas are right arround the airfield. There is no need to do a long flight to get to the training areas. In most of the schools in Johannesburg you have to fly to the nearest training area that will take you about 10 - 15 min of flying. So in an hours flight, you will only have 30 min of actual flight training where at 43 in an hour you will have at least 50 min of actual training. For more information on 43 airschool:
http://www.43airschool.com . Really hope you choose the best
