A while ago I did a long round trip in South Africa and Lesotho. There was no real plan and I just followed beautiful scenery. This is the flightplan following my journey. Use it as guide for some great sightseeing. Plenty of airports to rest along the way. I mostly flew c152 (JPLogistics mod) but you can use faster plane. No need for STOL capabilities on this flight.
Enjoy!

 

Use littlenavmap for better experience. MSFS2020 pln file also included