For travel at this November, you need to look for award space around last Nov/Dec, that's how CX rewards work.
I tried to find some next Jan SFO-Australia on CX on Feb, and found plenty of reward space back then (I just don't have enough points for two people roundtrip on business so I gave up

)
I just tried on ba.com for dates at the beginning of next March, and there're plenty of availability for SFO-HKG and HKG-AKL on CX J