I can't fault the previous comments IF you are going to be located in eastern Australia. OTOH if Western Australia, the issues of international flying become a bit more convoluted.
I agree that the AA PLT bonus and current AA redemption rates can't be ignored, but the unpublished benefits of CX status and the inability to credit most CX economy flying to AA make decisions less clear.
So, will it be east or west?
Happy wandering
Fred