1) Ring the RTA down there and find out what 'they' mean leagally by 'temporary' ... could be 3 months in the one location? Someone there will know.
2) You'll find the insurance is costly ... so much so that few, if any, take it out .. thus the insurance people don't offer a product no one buys. Not happy? Ring the Insurance Council of Australia (?) and ask them to recomend a few ..
Regards Frank Warner
motorcycles BMW R80 G/S 1981, BMW K11LT 1993, BMW K75 G/S