Very interesting thread, I have the following questions:

How much would the materials for this project cost?

I assume the resin would be epoxy. If so would the beams need to be painted or gel coated to prevent them getting too hot in the sun?

Kevin is your suggestion to add kevlar for impact resistance?

I understand kevlar has a tensile strength very close to carbon. Could the beams be made with just kevlar? Is kevlar more elastic?

Thanks guys.