I would just buy the Blue jay kit if it was availible and build a 30cc but it has been out of stock for sometime. I do want to build light but Im not getting obessed with it. I dont want this to be a floater. I need a good reccomendation of rib thickness so I can get started. Im thinking of a combination of lite ply andbalsa. I was thinking of the fiberglass tubes because they are 53" and would make a great jig for building the ribs. Im going to work on enlarging the ribs and placing the holes for the tubes on a tempate and go from there.