Mike, indeed flying in developing countries is always a challenge and demands in some instances to lower your quality threshold. As was mentioned before, I also had to fly in plane were the DG did not work, the AT was just a decoration and a GPS 296 was the primary for everything, including the altimeter. But the pilots knew what they were doing... He took off downwind and I asked him why, and he told me that it was because people and animals crossed the runway at the other end of it and he felt that it was safer to take off into the wind, in lieu of running into an animal...
But what really concerned me was maintenance. Asking for a logbook was always a challenge, ensuring that the right parts or oils, screws etc were utilized well dream on... How to avoid it? Hard... you contract an Air Taxi and you trust that they know what they are doing. In most cases the pilots know what they do and where they go. Your first flight does not come as a surprise to me. I have seen this many times. Training is performed on the job...
On your second flight it depends on the pilot you run into. I flew with former mercenaries, military, people who have been fired from jobs because of activities they may have performed that could have been considered irregular and they found a job in Africa... But they are totally underpaid and overworked. So no surprise when they are not in a good mood.
Overall, my experience is that the planes are flyable in particular if they cater to tourists. It is very bad publicity to crash an airplane full of foreigners.
The main problem I see is the lack of ATC and good weather reporting. You really depend on calling your destination and asking what the weather looks like...Also the difference between VFR and IFR is rather flux...Most of the flight plans are VFR, but in reality they do what they have to do to get you where you have to.
Enjoy Africa, and take many pictures...
Also, unrelated, I saw your christmas flight video. I was impressed with the quality of the video... what camera are you using?
Oscar