Glen,
Great lateral thinking their mate.
Don't forget school holidays may put a dampener on some with young families and limit availability of established camp accommodation. You need to be 30 mins from a town for supplies etc.
But you should pursue your thinking - those equipped to camp out with small generators may really like your ideas, as this opens up many more options for dark skies. Country sites away from the coast equi-distant from Melb / Syd or Syd - Bris would be best.
David
