Welcome icepyk. A few years (and a few more :-)) I lived at Lawson, as you know, not far from Katoomba.
Keep the 3000 and enjoy it by all means- but, you won't regret getting a C64 as well. Not to cause any flame wars, but, the C64 is way more active and friendly these days than the Amiga scene - that way you can enjoy both...
Good luck, and rug up - so you don't freeze your nuts off in the freezing bloody cold Blue Mountains!!!