If I may, John, I'd really like to persuade you that CyA is not the way to go. Epoxy is much better, at least partially because it has some flex, which the CyA's do not. I believe it makes a stronger bond, too, and is probably lighter if done properly.

First, make your "Epoxy Spreading Tool". I use expired credit cards, and saw a thin kerf with a hacksaw blade every 1/4". The best way to apply epoxy for sheeting wings is to first edge-join the wing skins (naturally), and sand smooth on both sides. Then choose which side is to be "inside" (next to the foam), and spray a light coat of Aquanet® Hair Spray (thank you Bob Hunt). When that has dried, thoroughly mix a batch of 45-minute epoxy. Pour a small amount on the wing skin, and spread it out with the "Spreading Tool". The object is to remove as much epoxy as possible, without actually getting down to the balsa. Each of the 4 wing surfaces will require about 3/8 oz - 1/2 oz. of epoxy. Then lay a sheet of wax paper down on the saddle, position the skin on the wing and place the assembly back in the "saddle" (the empty piece of foam left when you remove the core). Place the other saddle on top and start adding weights. Books work, or a piece of plywood topped with full paint cans, sections of railroad rail, whatever. Let it cure overnight.

My 2¢ worth . . .

Ditto what Crist says... that said if you do consider the epoxy direction also give some thought to polyurathane glues used just like epoxy.    They work really well except for foaming as they cure that is an issue if you use too much glue and skip the wax paper on the cradles.  (Ask me sometime about the beautiful balsa covered foam wing sealed inside foam cradles....)
Bob Furr