We have had some staff members camp in that area, here is a link: http://www.derm.qld.gov.au/parks/conondale/camping.html
There are 3 camping areas to choose from.
There is a creek crossing on the entry which I suppose you will need to check with the park to see what it's condition is before you go. Our staff didn't have a 4x4 however and there were people with campers in the camp grounds.
The creek is nice for a swim too, but it would be fairly cool at this time of year.
Would reccommend checking these campsites out.