Hi,
A bit more of a risk on your part, but could save you money depending on what local prices are where you buy and then sell.
A friend was moving from Adelaide to Hobart, found it was cheaper to buy a flat tray truck, box and tarp all his house hold goods and drive it to Hobart.
He then used the truck for about a year before selling it for more than he paid for it.
Depending on vehicle market differences from Wollongong to Townsville, you may save a bit, or not.
Worth checking out the possibility though.
cheers