You will probably find that the length is going to exclude you from a lot more camp sites that you might think. Many NF camp grounds are older and were designed for trailers around 20-25 feet long. Slide outs are also going to create problems for you as a lot of sites are really narrow to boot. Compounding the problem are narrow access roads with lots of low hanging branches. Personally if you want to do a lot of boon docking think much much smaller. But at the end of the day you also want to have a comfortable home to come back to.