[DaveW]

Hi Hammerman, Welcome
Cant add much to the points others have said here except, its a sizable investment, so don't skimp on an airfare or two to visibly touch and talk with the makers, get over to Perth, get up to QLD and NSW and visit some of the locals.
You'll see somethings you like and some you don't,
Be realistic about what your abilities are and your patience level, that will determine the best choice for you, there are a lot of unfinished projects out there because build problems got too "hard", and they didn't have the perseverance or financial backing to get somebody to help them through it.
Most importantly, ask questions on this forum from the builders, there is every type and combination and you'll get lots of solutions, suggestions and opinions to consider.
Cheers