Hi Lack, thank you for the reply. I've forgot to mention that I'm good with some fees and taxes. If it's like 400 to 500 USD for taxes, I'm fine.
If flying via Asia, Asia would be the origin. I don't live in the US, so the routing would be like TYO - SYD - AKL - TYO.
I'll check AC Aeroplan, thank you for the tip. I was trying to check the availability at AirCanada.com.