2x4 -- yeh - easy - 2ft span multi wing - 4 ft long for stability
what's the big deal?
would I bother ?-No - just as a swag 0if there is no all up weight or speed or power confines - I would use a one cubic inch IC and stack as many wings as needed at 3-1 aspect ratio and a 2412 airfoil (simple n easy )
basically something that looked like a crude Fokker tripe
should be no worse flying than some scale stuf I have seen