The Top Flite Cessna 182 1/5th scale box says 10-12lbs. My Cessna right now with out the glass and paint everything else installed weighs 9lbs. I'm using a 120/4 banger on it! Do you think I will go over the 12lbs and if so will it matter if its a pound or two over? I'm using .75 glass West System resin 2 coats ,primer, ppg paint and clear!