Hi Kevin,
We have one Yumeya 20K max spool left. It is $399 but as you are OS you don't have to pay Aussie tax so it would be AU$362. (It would squeeze into the tube with your rod). Gordon spooled his 20K spool and it took 300m (He spooled it really tightly). We haven't spooled a max spool with PE12 yet but estimate you will probably get about an extra 50m - so far we have been spooling them with lighter line for untra deep jigging.
Hope you got my email,
Cheers,
Janelle