RE: 3D Plane
Any of the Fliton feestyle series would make a GREAT plane in the 60-sized range. You can get the Fliton Edge Freestyle, Extra Freestyle or Inspire 60. A Saito 100 would make a great engine for any of those three engines. Also, regular Nitro that you'd use in a 2-stroker is the same fuel for a 4-stroke engine.