Steve,
Thank you for your kind words...your check is in the mail!
I see see no downside to what you are thinking on the wings, but the good thing is I built one as well and I don't think you have any issues with just moving ahead as normal and just cut them out and cap them. If you go silkspan I would do two coats of lacquer or lacquer sanding sealer on the whole wing(s). You will add almost zero weight. If you go my route and wrinkle coat the bottoms you only need to lacquer the top surfaces. I have found those little thin bipe ailerons can warp on you even without finish, so I just deal with it. One other thing that works great to straighten the ailerons is hit both sides with a heat gun, prop them up on both ends and put a little pressure in the middle and it will straighten them out nice. I find putting a coat of Min Wax on both sides of the ailerons really helps stabilize them.
Personally I think you can bring the weight in a hair less with silkspan versus glass. For one thing you are only adding 6 or 7 grams of silkspan per bipe wing (one side)