>> 3) Using leading and trailing edge 1/16" balsa sheeting with cap
>> strips and then covering with Monokote.
>Will save some weight, some guys actually cut out the foam between the cap
>strips resulting in a 'built-up' looking foam wing. Too much cutting will sacrifice strength and will require reinforcement of the wing along the area where the wing spar would go.
Hmmmm...
How about arranging these cap strips so you have "geodesic
ribs"? Once you cut out the foam in between it'll be far
stiffer than if you use simply back-to-front capstrips.