Gah - the HKG stop is being classed as a stopover for points calculation and there is no J availability out of HKG. At this point I am tempted to book as far as HKG and either book separate J seats back to SYD or book economy seats and try for an upgrade using QFF points (certainly a reason to get WP then).
EDIT
Cheapest J seats I could find on Zuji were HKD36K... and I would be half tempted to book those and upgrade to F
EDIT2
Thinking about this - I am now basically screwed due to the original flight to HKG being a stopover - even if I could get a flight to MEL in J that would put me over 25K miles
Looks I should be resigned to economy - now just need a booking class that is upgradeable...
EDIT3
Looks like Economy HKG-SYD goes for about $3600 on Expedia (for two pax) and $6000 for business - might be better to book business class then.
Another option might be a QF award as I dont have enough points on AA - 60K points for two pax in Economy - I could potentially keep an eye out closer to the date so see if any J/F seats opened up and cancel the QF Award flight and rebook a AAward in F/J and pay the 10K points penalty for reposting of points. I dont think a WP benefit is opening up of award seats in J/F - if it was then I would be even more tempted to go for WP.
I have some points to post to AA - about 25K and 90K in Amex - but I dont think I could get them to AA in time to pay for the AAward.
EDIT 4
Ok after a bit of rambling I think I have worked out my options - assuming that I can not get 80K miles to AA in 7 days.
1 - Buy QF upgradeable whY seat and try to use points to upgrade (would require WP status to improve chances) - A$3,600
2 - Buy QF J seat and try yo UG to F - A$6,000
3 - Buy another airline J seat - approx. $6,000
4 - Use QFF points for award flight HKG-SYD in whY and keep checking if availability in J/F and then rebook in J/F and using either QFF points or AA points - I will be back up to 200K by Christmas and probably up to 400K by July.
In relation to option 4 the interesting thing is that this is where QF might actually beat AA. For AA a oneway award uses round trip points so a J/F seat on AA HKG-SYD would cost 70/90K points. On QF it would be 60/90K points. I could dump 90K into QF today taking me up to 140K (I have 25K points allocated for an F upgraded at the moment - but 20K to spend on my next trip so comfortable on the points front).