You can do your FAA medical renewals at Dr. Jordaan in Windhoek.
By the way if someone wants to know the nearest EASA AME is Dr. Nick Lee in Simons town near Cape Town in South Africa. Did my renewals there. He sends the forms to the UK CAA and prints out a new medical for you.
Plus a good excuse to visit the beautiful Cape.
With less than 500 hours rather try namibia as there are no minimum hour restrictions.