Went to the ASWA 'stap camp' out at Dryandra Woodland, back in October. Wasn't too far (170km) from Warnbro, and provided some excellent dark sky.
A very enjoyable experience (apart from trying to avoid kangaroos on the drive back late at night
), and I'll be back over in WA (4th visit
), in around 12 months.
From what I've seen, you guys really don't need to travel too far inland, to lose the lights.
Dave