I have an upcoming trip to South Africa in May and I have found out that a DONE4 (ex WAW) wouldn't be much more expensive than LHR-JNB-LHR in C, so I'm considering doning my second RTW (Thanks Spotwelder and the rest of you for tons of advice on the first).

In order to get maximum miles I'm looking for advice how to use the Africa segments best, hopefully without wasting the possibility of the LHR-DXB-LHR MR.
Any ideas?

Best