Hey, just a thought but what about building a "HOT WIRE" foam cutter and using high density foam (2"-4"thick roof insulation panels, Home Depot) to cut your shapes out of thus creating your wings in a fraction of the time to fab out of aluminum. Then you cover with glass or carbon fiber which is fairly easy to work with. Model airplane junkies have been using this low tech method for quite some time and its cheap and easy to build a setup to cut your foam blanks in any profile you want. If ridgidity is an issue it is quite common to use a hollow aluminum spine down the length of the wing which when coupled with an outer skin of fiberglass or carbon is extreamly ridgid. I have a buddy who has made these things and built some very large and very complex compound taper wings that are over 60" (P51 mustang wings) so I have seen it done first hand, so simple but so trick.
Here is a link for building the exact setup I just mentioned-
http://members.fortunecity.co.uk/slmohr/rcinterest2.htm