Hi Joe,
I've done a lot of composite work (by modeling stds for personal use).
I can help you out with most things.
When I was doing this there were no good quality kits for F3A to be had.
So me and a friend got into it and shared the work. A lot of work a lot. Ian made the plugs and moulds and I made the mouldings.We used epoxy,glass, kevlar,carbon with polysterine and then rohacell as compression members.
Ian had some years before that studied composites in college, he produced a composite motor cycle frame as his theisis project around 1980. So I learned what I learned from a master.A lot of what we did was done for the first time in models. I wont be getting back into it anytime soon but some advice is no problem.
Brian