Also if you arrive in Australia without your things, you may have to wait months for them to arrive. Some people go sightseeing while their goods are in transit. They take a caravan and tour their new country. Or you can hire temporary household equipment in Australia. If you are bringing in antiques, make sure they will stand up to the Australian climate.
Some wooden furniture can warp badly in the hot, dry heat.
Be careful of marquetry and inlaid items. Pianos with a wooden bed need frequent tuning. Antiques and stuffed animals may need fumigation if the port authorities suspect any kind of infestation or contamination. Also, if your family's wealth is tied to these antiques, make sure Australian values are the same as they would be in your present country. For example, you may have a silver teapot.