look at some of the old estes models. what they did is had a one piece wing with a pivot in the center, and slid out horizontally. i would say this is your best chance. one more thing. if u are using an O motor, u are going to be a few miles up. hope you have cameras or really good vision. as far as the engine, use a turbine. if i was doing this, i would stage the thing, and have the motor drop away. also, u are going to be in the few hundred pound range. O motors themselves weight more like 100 something lbs.