Yes correct, when we have one or more complete models will be better. I don't see something special or difficult in the wings , the fuse is much more difficult for building and covering.
For me is important what final weight is the Spity , how she fly even if it is individual skills of each builder-pilot. In forums I watch really great models , but of half of them the weight is pretty much, I think that one model in 1/5 scale fighter must be around 8-8.5kg for a good flight.