Not yet
Australia currently has no 747-400 Passanger bases.
The freight going to Aus will eventually be done by 744s (no classics)
So to get a pax base in Australia you would need to do your freighter commitment (42 months or whatever the flavour of the day is) and then you are elligible to come "across" to the pax fleet. There must be an FO position available on the pax fleet. IF you want to stay in AUS on the pax fleet then you would need to change aircraft types (AUS is all airbus all year !). To change aircraft types would take considerably longer as you would need to use what is called a "joker". A joker is a one time type transfer. After you use it you don't got any more. As there are only a limited number of joker courses offered each year (at co. discretion) it is possible that you could stay on the freighter considerably longer if you did not want to move to Hong Kong base.
Having said all that the rumour has that the company wants to re-integrate the freighter fleet. What that re-integration will look like or how long it will take is, as we say in aviation "all up in the air"
So sorry I cannot be more helpful but stand by for new meaage !
FG