Leaving Adelaide this weekend in my van (toyota hiace) and planning on following mostly along the coast to melbourne

stopping at national parks and beaches, maybe princess margaret caves ($20 to go in the cave),( a potential detour up to the grampians ) the great ocean road, the otways rainforest and waterfalls...

I travel fairly budget and free camp, I have a gas stove for cooking

the trip should take probably just over a week... I just looked up a few places that look cool to stop at, but im flexible with whatever and like to go with the flow :-)