(This is based on the WAMC and other threads I've read here)
You need US-based clinical experience to get into a US medical school. There is a chance your work in Africa may be seen as voluntourism if that's the only clinical exp you have, whether it was or not. 200 hours is on the low side for a lotof the schools you listed, and on top of that it is foreign experience. I don't think your app in its current state is competitive at all, simply due to the ECs. Make sure you have shadowing with US physicians!! That's the whole point.
If you can get a year of clinical experience in the US (full-time or even half-time work as a scribe should give you 1000+ hours), I think you'll be in tip-top shape and will see a lot of success. Without it, I really don't think you should apply.
Is your nonclinical work also outside of the US as well?
Additionally, do not bother applying to UCR, UNC, LSU, and Minnesota. You have no ties to those regions/states, and you'll be wasting your app money. You will be yield-protected from Drexel and Gtown, so there's no point applying to those schools either.