Wirelessly posted (BlackBerry: BlackBerry8530/5.0.0.1030 Profile/MIDP-2.1 Configuration/CLDC-1.1 VendorID/417)

Put the YVR-JFK-AUH-AMD itinerary on hold immediately, while it's still available. That will give you five days to decide. In the meantime, you can read up on the relative merits of CX Economy versus EY Economy.

I would also check for availability for YVR-NRT on JL, and NRT-DEL-AMD on JL/9W, and NRT-AUH-AMD on EY. If the routings are allowed, either itinerary would only cost 47,500 AA miles total as two awards.