Great suggestions - thank you. The tokyo route looks like it would work. Just need to convince my partner that it's worth it given the extra distance and layover (23 hours vs 15 on a direct flight). Beggars can't be choosers line of argument? Or just part with more points (and taxes/fees) to book the one way flight LAX-SYD direct outside of my existing OWA booking.
Thanks for the help everyone - much appreciated.
Well... the way I figure it is that you're likely to be asleep for much of the 8 hour difference anyway And it's 'free' as opposed to more miles and $$ with an additional QF booking.