yeah finding firewood wont be a problem at all guys.
I just want to remind you guys that the area really isnt that big, well not compared to lithgow ect, and the terrain in MOST part is very tame and can be done in a soft roader, but there are some great spots and lookouts to be found and if you get your self the paper topo map of "Bundanoon" from the Mittagong (or similar) tourist centre you will be able to find your way around and also follow Gunrock fire trail out to Red hill Trail you will end up on top of the Fitzroy Falls and its lookouts.
Also there are no deep river crossings only a few hub deep ones, maybe less with the lack of rain, and thats if you find them or choose to drive around a bridge or two.
sorry i cant make it to show you guys around but im sure you will find some good stuff and end up enjoying the area all the same, Actually probably more with out my annoying voice blabbering over the UHF all day.
Anyway enjoy guys, look forward to reading all about it.