Mine weighs about 14lbs with an A&M 2.0 gasser. I think the 1.20 will be borderline power, unless you are really light. Mine needed 1lb of weight on the firewall, and balances 6 1/4" back from the front of the wheel well. The plans show the balance point at the point where the wheel well cover meets the sheeting, (6 1/4"). I don't have flaps and the landings are hot to say the least, but the model is very good flyer. I usually use about 100-110# of air.