I'd look into "Canoeing the Delaware," and "Paddling the Delaware: A River User's Guide." The latter is available from e-parks.com.
I've done the northern stretch from Callicoon to south of Pond Eddy (Mongaup Valley), a three-night trip (nearly 40 mi), but I did it in May when the water level was higher than average, making the rapids extra fun - even in a SOT fishing kayak.
I'd recommend that you get the experience with a group prior to leading a trip like the one you mentioned - especially on moving water.
The guidebooks will tell you at what mile marker the rapids are, and you'll be more likely to eliminate water you don't want to run.