I have never sheeted a foam core wing, but have heard it takes time and talent. If you wanted the challenge, the sig kougar is a very durable, tough, and smooth flying airplane, just what gray beard said. I flew one for a guy who liked to build a couple years ago, what an airplane.

Any sig sport airplane is a good one. Maybe not the Hog bipe, but its your choice. I personally would go with a midstar and 4*40.