I wanna meet some WA local and then sell my gear when my holiday is done...
Where should I post this "coming to Perth" thread?
I agree with your logic Jankie of using the general section, as nobody in WA reads or posts to their dedicated WA state section.

After all, it would make sense to get maximum exposure to ping it in "General"

Here is a simple suggestion... Pay $15 to place a seabreeze advert and keep the site going, state that it is available on 6th of March. If it doesn't sell, then leave it with one of your new mates to organise its sale and postage.
Great to have you on our shores bringing good tourism to the west coast. Have a great holiday and please post your holiday snaps and updates in the underloved "WA" section (until it is abolished). Yeeeew!