With that much chord length, and the aeronautical knowledge of the time, its wouldn't be quite a true airfoil, and I would be sustained level flight with no thermals and the power to weight of the motors of the time would be difficult. A quick glance suggests powered, range extending glider, not airplane.
Hell, it looks to have half the wing area of a powered para glider, with 1/5-1/10 the horsepower, without modern materials...that suggests...difficult.