where are you going to reside when you get here?
we are a family of 4 and live in Aldinga Beach,we have a low mortgage and manage to live quite comfortably on $45,000 and have to pay school fees.we don't live a lavish life style but don't go without either,it really depends on what sort of living you are used to and what you make of it!
We are still newies,only been here 5 months and are finding things out as we go along but if we can help in anyway just ask and we will try to assist.
Good luck,As my dad said "if it doesn't work out,you can always go back!" so far i really don't want to!