PS - forgot to mention this ... as I understand, because of the deciduous leaves, it is easier to see game during the winter months. But that doesn't mean that December won't be good game viewing, just different conditions. The guides are so incredible that i am sure you will be incredibly satisfied with what you see.

To rush around to see the Big 5, might I suggest the Sabi Sands???? You probably can see it before 7AM ..... albeit, Black Rhino may be difficult. You certainly can tick off the Big 5 in the first few mins and then rush off to a big buffet meal.