You could float that in a long, long day. It takes me about 12 hours to float from Ronceverte to Ft Springs, then I stop a fish every likely area for a while. It can take me 8 or so hours to float from Caldwell to Ronceverte, but if you put in and just float and don't stop you should make it to Ft. Springs in 12. If it were me I would put in at Caldwell float to Ronceverte, take my time, pull out in Ronceverte, then drive the 8 miles to the campground. I think the fishing is much better between Caldwell to Ronceverte than from Ronceverte to Ft. Springs. If you decide to float from Caldwell to Ft. Springs start early, spend a little time around the islands, and then float down to where Spring Creek dumps into the river (can't miss it between Ronc and Ft Springs) spend a little time there, and then float to the camp, should be able to do it in about 12 or so hours. It is 14.5 miles from Caldwell to Ft. Springs, 8.5 from Ronceverte. Good luck, if you need help ferrying between put in and take out let me know, be glad to help, can't do any float trips anymore so I wouldn't want to tag along, but if you need a ride from put in to take out or whatever just drop me a pm.