Magic, I think your advice is right on. Not that I know anything about composite layups, but I did have a very good conversation with one of the fellas who built my Expedition. He pointed out the pluses and minuses of glass, kevlar and carbon. In their experience, the best bang for the buck is with e-glass cloth and vinylester resin. The weight difference is very slight, but other issues, such as potential repairs and moisture wicking are much better with glass. I mean to say that wicking is much less a problem with glass than with kevlar.
I've come to realize that there is always going to be a compromise between weight and strength, or rigidity. You would probably agree that a glass covered wood boat is hard to beat on those issues, but then there are other aspects that are compromised with that method.