check out badgers caravan forum , depends which direction you are coming from but there is also a large rest area called lyndabale 16km south of tomingley or 2 km north of peak hill and seen as the dish i think is about 25km north of parkes ie between peak hill and parkes or about 36 km south of peak hill .. need to be self contained gpc 32 41 53s, 148 11 25e
if its just an overnighter also have towed carvan to dish last time was road works and the road narrow in sections but got through ok thats probably why they were working on it , plenty of parking at the dish
hope this helps