Last September, 2017, I packed one camera bag with my original ME Super SE, a F 24-50 f/4 and an A 70-210 for our South Africa safaris. We did 6 safari trips and I was the only person I saw shooting film, let alone with manual focusing. I knew we would be shooting Victoria Falls and for me the 24 was the focal length I wanted to use and I found the 210 was sometimes too short for the more elusive animals.
You already have some good advice and I will just add one point about zoom lenses. I have almost all prime lenses for my normal work and bought these two lenses very cheaply for the trip. The reason is you are in an open vehicle that you are not allowed to leave while in the parks or in a boat along the shore of a river or lake. You may be shooting an elephant on the shore one minute and then a hippo may rise up in the water next to the boat. Same for land shooting as a herd of elephants cross roads and go wherever they please and there was one herd that walked on both sides of our vehicle so closely that I could reach out and touch one. The point, you will not have time to change lenses.
Casting Shadows
Chobe National Park, Botswana
Pentax ME Super SE ,Pentax smc P-A 70-210mm f/4 Zoom ,Kodak Portra 160 NC
Pacific Image Prime Film XA Slide & Negative Scanner
And you won't believe this...my wife shot the whole trip with her Apple iPhone 7Plus with the two lenses with zoom. (the hippos I mentioned)