I think you should consider other battery technology, personally. Those group 24 deep cycle batteries weigh in excess of 75lbs usually. You would almost need a canoe or small rowboat to handle the weight of the batteries. I hate to be a Debbie downer, but I don't see this setup being economical in the least. It would work, but at what cost? Two batteries at $334 each plus the other stuff? The whole setup may end up costing $1k or more. :O