Your two best choices for this are laminating epoxy or polyurethane glues such as Gorilla Glue or Elmer's Pro Bond. You need time to work when skinning wings and both of these give you that, as well as light weight (I think PU is lighter, but only marginally) and a very strong bond.
Read this before you glue anything:
http://www.mackrc.net/patternwings2/index.htm
Mark