Welcome from another Melbournian.
If you are going to hop onto a train and come down, then Vanbar in Carlton would be your best bet for any darkroom stuff, be that film or paper, you can check online as to what they carry, whether they have the particular item(s) or size is another matter, but generally speaking, they literally carry pallet loads of paper.
That is a very cheap price for that film, cheaper than bulk loading.
I think I have a spare Paterson tank, with either a single or a few reels. I'll check the darkroom in the morning, too cold to venture out this late.
An outside laundry in Ballarat, probably with a concrete double trough, perfect for washing prints in, but friggin freezing this time of the year.
If you do go to Vanbar, take a large empty back pack
Mick.