Wow. I can't believe it took me this long to get around to doing this classic Australian river trip. Put this one on your list if you haven't done so already.
I'll let the video tell the story but the basics are :
Put in - Buccarumbi bridge
Take out - Jackadgery
Distance - 49k with side trip up Mann
Time - Three days
Water level - 1.2-1.3m Jackadgery gauge (a bit higher would be better)
We portaged two grade 4 rapids, Lower Cunglebung and New Zealand falls and ran everything else.
Route details are here.
If you can't spare three days this trip could easily be done over two at this level. Although we didn't venture too far upstream, the side trip up the Mann was, without a doubt, the highlight of the trip. The hiking up the north bank is slow and scrubby but the amazing scenery, fantastic boulder garden style rapids and a strong sense of wilderness made it well worthwhile.