Hello Madbox
Weight of each wing of my Partner (balsa foam with Oracover ) is 460 g totaly équiped. Carbon tube is 50 g.
I also had a Cocaine and Rhapsody (JM composite/ Modelltechnik-lorenz). Weight of each wing painted in mold) is about 450 g totaly equiped and carbon tube is 70 g.
Now wingspan is about 1,85m. End of wing is smaller than before about 200 to 210 mm.
A good airfoil is Eppler 168
http://epervier.sudluberon.free.fr/spp/21profil.htm
regards