So we (well i'm not going to lie, I) have ruled out a lot of gorgeous locations because they are just too expensive.
For anyone out there on a different budget the following might be perfect for you (If you live in Perth that is):
Not right for us but could be perfect for you:
This is closer to what we are thinking at the moment:
I have also just found out that a few of my family members own farms about 3 hours out of Perth and then my Pa has friends about 2 hours away in another direction that also have farms so there could still be options to speak to those people and see if anyone would allow us to host the venue there.