Not only home to Australia, but to
Sydney. It will be warmer in the middle of
winter, and you're probably acclimated to a lot warmer
environment. The trip down the
east coast of Oz, where if you want to, can be done in day hops, and using open roadstead
anchorages, is not hard on a boat the size of yours; and the more weatherly she is, the easier. Of course, you can hop on the East Australia
Current to speed you on your way. It could be a little ugly getting to Adelaide from the east, though, in the middle of
winter, with all the strong SW winds, although there are some
ports of call.
Fwiw, if you will be heading for a home in Adelaide, that you will re-occupy, then perhaps the west coast would make more sense to you, as it will make un-loading the boat easier, and more doable on evenings and weekends. That convenience may appeal, as well.
If the boat does not have to be imported into Oz, that will be money in your pocket, too. In thinking about this, I had to ask myself "what could possibly go wrong?", and I would think if another pandemic occurred; if the
Ukraine War becomes worldwide; or in the event of a "natural disaster", it could get to be almost impossible to deal with selling the boat long distance.
Ann