Only other thing you might need to watch out for is the high probability that by next July that Qantas will no longer fly SYD-HNL and it'll become a Jetstar route instead. There *should* still be the QF codeshare on the flight if it changes over to JQ, and the ONE rules allow JQ metal (with QF code) for those that originate outside Aus or NZ, but it may make for a less desirable flight (and also a good chance of schedule changes as part of the changeover as well). For those doing a DONE it's something to be even more mindful of, the downgrade from International Business Class to Star Class on Jetstar (roughly equal to Domestic Business Class on QF).