SAA does a lot of the inter country flights. I found them to be quite safe. Kalulu another good carrier.

It is a long drive, we did it in a rental car, so we could drive through Krugar on our own. Krugar is huge and it gets a lot of traffic.

We went to a private lodge outside of Krugar and it was great, just us a guide and tracker in a Land Rover. Ingwee (means Leopard) was the name of the lodge and it was abot 20,000 acres. We found that about 4 days of game was enough. The nice part about the lodge is during the day when you are hanging around (you go out AM and evening), you could hang out by the pool and have cocktails.