Check the the powerline edge 540 3d .46 size there is a thread on it on 3d flying video funtana vs edge. I am buliding one right now and weighed the bare airframe only and it came in at 3lbs. 4 ozs. very light but very well built. The control surfaces are HUGE. i picked mine up for $125 at the hobbie hut in new orleans. i am planning to put a saito .91 in it but there are some videos of it doing some crazy stuff with a .61 fx your engine should fit in there as well there is alot of room in the cowl. So far out of all my planes this is surly the best looking and very well engineered IMO.........best bang for your buck