Hi addlesmum,
We had a good trip over a few years ago by car. From Echuca we stayed in Port Augusta, early start to Eucla, Norseman then down to Esperence, Albany (did the tree-top walk) and after Albany saw the Jewell Caves which were fabulous. Up the west coast to Fremantle, out to Kalgoorlie then down to Norseman, across the Nullabor again then down to Streaky Bay, Port Lincoln and back up to Port Augusta, Clare and home. The trip took us a month as we visited our son in Fremantle. It was October also and the wild flowers were out and beautiful to see. It will be a great trip to go on the bike, so many changes in scenery, and dingo's !!(ask Bob).
Cheers Mary