Disregarding what you want for your hunting at home, for what you are planning to do in Africa a fixed 6 power scope sitting on an accurate 30.06 loaded with 180 grain Nosler Partitions or something similar would be hard to beat...
If the PH where you are going has one that you can use, go for that and study more on what you want at home in the meantime.
that's what I'd do in your situation.
