hey ferret welcome to the giants.
we have an aussie thread, giants down under where most us hang out.
if this is going to be your first gasser and little johnny is going to help you fund it. you could try starting off with a second hand plane.
have a look at
www.scaleaeros.com.au aerowiz is right, although the thought of having a 40% plane does get one going. the price jump is pretty big. what club do you fly at? i know a few guys down there who fly large gassers and i'm sure they would be only too happy to you some advice.