I was in Liberia/Ghana and UK for work, each country for a week. Croatia/Bosnia was with coworkers for a week after London, since they had already paid the cross-Atlantic flight, I was able to get round trip tickets for 200 bucks.
Botswana is an unbelievable country! Probably the most stable in Africa, and likely the safest too. Would highly recommend it - six of my friends and I went on a safari and camped out in the parks. A little scary at first, especially when you have to pee in the middle of the night but there are hyenas and lions right outside your campsite, but it was probably the best trip I have ever been on - plus you can drink in the parks.
We went to Zimbabwe and Zambia for 5 days after and stayed in airbnbs around Victoria Falls/Livingstone.