I'm on the Gold Coast and would love to make those A1200s more useful. How much are you planning on selling them for? To be honest my intentions are to buy a few extra Amigas, service, clean and moderately expand them, set them up with my nice custom Workbench setup loaded with programs and games and resell them as a nice package deal. I think the way I'd set up an Amiga would guarantee whoever buys it will really enjoy using it and get more use out of it, perhaps even inspiring them to work creatively or develop new programs and games with their new Amiga. This is just something I'm passionate about, it's not something I'd want to make a profit from. Making new Amiga users is more important to me than making money.
Or if that sounds a little crazy I can send you a set of Workbench 3.0 or 3.1 disks if you tell me your address in a private message.