So we finally found the wood we are using. It's Brazilian Redwood. After it is stained it will be a lighter color than cherry. The wood has a 30 year shelf life and more if it is protected correctly. We are putting a 1/8 inch gap inbetween the boards and building the bottom like a deck. This will allow the boat to flex some and not stress the wood as much. We are buying carpet and making runners. That way when we arent using the boat we can store the carpet in a dry place. I will try to take pictures when we are done.