I built one for Ali a few years back, loads of work but seemed good once done. I have loads of pics of the build, which is here on the forum somewhere as well, need to reinforce the landing gear area which I did with some carbon/kevlar cloth and a little bit of added support at the trailing edge by the wing root where the flap sits.
I'm happy to send you pics and chat if you need - email me for number...

marcs