Greg, thanks for the local information. So the Newell Hwy from Tocumwal to Parkes is a good road? Seymour - Shep - Tocumwal - Parkes sounds like a better option.

I drove to Young about 3 years ago and remember a bad stretch of road somewhere out of Wagga so that may be the area you are referring to.
Trying to look for any other astro related sites to visit on the way. Siding Spring would be an option on the return trip also.
Still early days in the planning but chances are good! This will be the first big trip for SDM #059