Thanks DownUnderFlyer!
From that I assume it would be a good idea to purchase the tickets now! I've read that the first segment can be within 12months and then the rest 12 months from that, so that would be fine~
I've adjusted it a bit more again. Adelaide to Melbourne is accessible by train and Miami to Nassau is only 200 miles or so!
Thanks for the FUK-BKK tip -> I've changed it to FUK-HKG-BKK which are the same miles ^^
As for the DONE5 suggestion, I looked at fares from IPC to PPT and they are quite expensive! I also looked at AKL to PPT and they were 2000AU business return too. I guess DONE5 gives more miles though and more SC's
Thanks !!