I think if either of these planes, the AKM 3D freedom or the World Models Fun World 3D plane stays in the 9 to 10 lb range a 1.20FS would be plenty. A 1.50 or 1.80 on a 9 to 10lb plane is excess IMO.

My H9 USTIK 1.20 weighs 11.5 lb and flies very well with my OS 1.20FS. I plan on putting that engine in the 3D Freedom, so even at 10 lb there should be power to spare.

I picked up 5 near new Hitec 945MGs for $125 shipped here on RCU which I plan on using in this plane. So deals are out there to save you $$$.

Jim