Depends on how much of the ground you want to light up and where you want that light to be. That said, this is a portable lighting system which isn't intended to provide full under-glow coverage for an RV your size. The longest light stick is 78" long. The shortest stick is 39". The maximum a single BoogeyBox can power is 6 - 78" sticks (or 12 39" sticks). You'll get a lot of light from these sticks but if you want full perimeter coverage, you would be better off buying a full perimeter under-glow light system that is permanently attached to your RV -- not portable. If you want to discuss, give us a call at 800.847.1359 M-F, 9-5 eastern and we'll be happy to assist.