thanks everyone for your comments. some very valid points in whats been said so far.
It's a good thing then, that I logged on to this website, on my way to "research" before going. I've spent most of my day off today looking at visas, assessments etc, and I think I do stand a chance, whilst perhaps the odds are a bit stacked, given the age limit business. I have stopped short of ringing agents, as I've got loads of info online.
I forgot to mention that my sister lives in sydney (when i first logged on yesterday, it was midnight already, knackered) and she's just done her property up, so we'll be staying in the 1 bed annex to begin with, if we moved. That'll save us a ton of money. She moved around 8 years ago, but a lot has changed since then immigration wise and her husband is already sponsoring his brother's move to oz, so i think she said they might not be able to sponsor me. But she's been pestering us to move to oz ever since she migrated. So i finally gave in and agreed to visit her this year and promised her that I'll reccy the place while I'm there.