You could do SFO-HNL with 500's/CR-1 and then HNL-SFO-SYD/MEL on a SWU. Don't know why you would do that to your body though

An award trip from the US to Australia with a stop in HNL are the same on any * carrier. Your choices from HNL are NZ via AKL, or AC direct on an inbound 767 from YVR. 60/90/120k in Y/C/F. Although since AC only offers C and NZ will soon only be offering C, a C award trip is very cheap IMHO.