Then I would maybe suggest the following:
JNB-MAD-AMM-MAD-SCL-GRU-LIM-EZE-SCL-SYD-PER-HKG-DEL-NRT-SIN-HKG-JNB
Gives you all 16 sectors, adds some extra miles in Europe (and Jordan is a great country - pop down nd spend a night in Petra - amazing! And SA passport holders get free visa on arrival).
Total miles would be 53,054 base miles or 79,581 points towards EXP status as you would be in J.