I have a Kyosho Cessna AgWagon crop duster; stock plane weighs 6lbs; span 69"; wing area 640 sg/in; wing loading 21 oz/sg/ft; engine YS53 fs; I have made significant Scale enhancements which includes actual working spray arms under the wings; this has brought the weight to 12lbs fully loaded with fuel and water for spraying; I have installed a larger engine a RCV 91CD fs; the dimensions of the wings are the same; my question is; will the stock wing loading/demensions be enough to lift this plane into flight with the increase in weight and utilizing a larger engine size; not looking at performing acrobatics just scale flight crop dusting. Thanks