Wirelessly posted (BlackBerry8530/5.0.0.601 Profile/MIDP-2.1 Configuration/CLDC-1.1 VendorID/417)
Your BA Avios won't do you any good: the only oneworld carrier that currently serves PPT is LA to IPC and SCL.
How about redeeming your Aeroplan miles to redeem on NZ PPT-AKL-SYD (if that routing is permitted)?