Redthroat and White-browed Treecreeper in NSW

I would like to spend some time from next week looking for the above two species. I will be departing from Canberra and I have looked on eBird and have some ideas on where I should search, however, I would love to hear from anyone who has better and more up-to-date advice. My thought is that possibly the best and closest place to look for the Redthroat is around Broken Hill and there are a couple of places enroute (Binya/ Cocoparra) or Gundabooka NP where I could try for the treecreeper. I have also been advised that Gluepot and SA could be an option, so should I head west or north? Regards Alastair