So it looks like I might make it up

and I won't be needing to rush back - I think I might stop in Brisbane for a couple of days too.
As I'm in no rush, could anyone suggest another site that is astro friendly so I could squeeze out an extra couple of nights?
Also, suggestions for any must-sees in the area, and/or in the Brisbane area, astro or general touristy stuff much appreciated...it's a long drive and I figure I might as well take in as much as I can while I have the opportunity