Reply to Mobile solar studio

So I have been bouncing around the idea of purchasing an rv and putting a small studio in it and traveling for a few years I want to be as off grid as possible so I want to put a solar powered system on it. my studio would consist of my macbook, ableton push, I pad, two studio monitors, a behringer mixing board, and a couple small synths. Can anyone who has done anything similar to this give me ideas on where to start and how many watts I would need to generate. l will have the money in the next six months to start on this project and hope to hit the road sometime in 2015 so any advice info to help me flesh out my ideas here would be appreciated!