another try-out for 34000m

1- london-santiago de chile
2- punta arenas - falklands return or saving miles with rio gallegos (arg) to falklands return
3-santiago-tahiti
4-tahiti-perth with auckland & sydney as transit
5-sydney-tonga return with polynesian airways
or from sydney to fiji return with an oneworld ticket and a seperate ticket from nadi to tonga return
6-sydney-johannesburg
7-johannesburg - london

if i should travel from cairo ther or 2 options i think
1- cairo-madrid and further, and back via
johannesburg - dar es salaam (seperate ticket or overland) and than gulf air to dubai and cairo
2-johannesburg- madrid-cairo with iberia

is this good homework?
WHALESHARK