Mavre, (Greek response)

Please see above. Panels are not fully finished yet (trim and clear). After the yellow base my panels weigh under 10 ounces each (280 & 278). It's a fair weight and about 3 ounces less than the foam cored counterpart.

these are typical weights for plastic film covered wings except not sure how large. Mine are larger than typical.

Built up panels, properly done, should be 3-4 ounces lighter and possibly more. Example I covered mine with carbon tissue and Esaki Japanese tissue. I wanted the carbon for its stiffness but Esaki alone would have been fine. Or silkspan alone. The extra 6-8 grams is worth it to me.