You appear to have a 4 continent RTW trip: Europe-Africa-SWP-NA-Europe. From CAI, this ticket will cost (in Egyptian Pounds) 29150/23320/10450 (or 21349/17080/7654 in Israeli Shekels) for a first/business/economy ticket -- plus taxes and fees.

Unfortunately, there are no exotic Pacific isles that OW flies to from Australia/New Zealand. (Well, there is New Caledonia but it's not your typical tourist destination. There is also Lord Howe Island which is part of Australia but is a resort destination.) The best I could do was Honolulu. Here is a routing for you to consider: cai-lhr-jnb-vfa//jnb-syd-mel-akl-syd-hnl-sfo-ord-yyz-[Europe]-cai.

You can choose a couple of segments in Europe but need to end up in either LHR or BCN for your return to CAI. For example, ...yyz-hel-vie-lhr-cai or ...yyz-lhr-gva-bcn-cai. As you have already used one of your allowed four European segments to get out of CAI, you only have three left to travel in Europe and return to CAI. You can also only make two stopovers (>24 hours) in Europe.