The transparent coverings look great. Just keep your seams nice and neat. The overlapped areas tend to darken a little and stand out. If they're ragged, you might notice them more than with an opaque color. Aslo, make sure the top and bottom of the plane contrast well to help with orientation. I like to add stripes or checkers, etc. on the bottom of the wing.

My profile Hots was done with transparent red and blue Monokote but I think Ultracoat might be a little more user friendly.