My buddy Kevin has this exact plane, but is running a OS 1.20 surpass 3.

With that engine, the plane is nose heavy, so he put in a big battery (1200mAH) in the tail.

He feels the 1.20 is too much, and is thinking of changing it for a 90 4 stroke. While he dose't have smoke, a large 1/4 servo, and the large battery pack only add to the weight, and the landings are considered 'hot'..