First off stay at the campsite at Dales Gorge and base yourself there. Excellent camp but no showers just toilets,very clean as the camp is looked after by the Camp Host. There is a fee to enter the park and a nightly fee at Dales but affordable. There are sections at the camp that don't allow generators but plenty of spots for generator use .
Then branch out from there to see all the gorges. The cultural centre has all the info you will need or camp hosts will help you. Bitumen into Dales Gorge but other roads are dirt and well maintained.
Dales gorge is where to camp unless you want all the yuppee facilities at the commercial camp ground. At least Dales gorge has seale d access. You could stay there for weeks and not see everything.
Stayed at Dales Gorge earlier this year - loved it! The gravel roads in the park were a bit rough, so allow a bit of extra time. Also, a shower is available at the Visitors Centre.
There is no food or fuel available in the park, I had to go into Tom Price when I needed fuel, but tied it in with a run to Hammersley Gorge, which I thought was terrific!