I planned my RTW and would like any advice especially how can maximize (Yet have some FUN) in Aussie. BTW, I never been to Aussie so any suggestions for destinations will be great as well.

note: *=compulsory stop, /o=optional stopover

CX award:
DTW-YYZ-HKG
HKG-MEL

MxOWE4:
MEL-SYD/o
SYD-perth/*
perth-HKG/o
HKG-*** /*
*** -HKG/o
HKG-KIX/o
KIX-HKG/o
HKG-YVR/*
YVR-LAX-SJU/o
SJU-DFW-ANC-ORD/*
ORD-LAX-LHR-IST-LHR-DXB-LHR/*
LHR-MEL

Award return:
MEL-HKG-JFK
LGA-DTW

Since the OEW only allow 2 stopovers in Aussie (origin con), any suggestions for how I can visit SYD,MEL,Goldcoast? Other cities I should go (fly) and worth both visiting and miles?)

Thanks!