Maybe ADL could be possible for 2009? Would have to stay clear of the Clipsal 500 weekend though.
QF81 is ideally timed for a F lounge experience in SYD. Departs 11:05 and arrives in ADL at 12:45, just in time for the Coopers to be turned on in the QP.
I don't think availability would be a problen on this flight (except for the constraint above).