I was given one about twenty years ago. Used to let my wife fly it when she was interested (not so much anymore). A fellow modeler heard that I had one and persuaded me to sell it to him. He Still has it I think.
But anyway, mine flew with an old O.S. .35 2stroke and later with an Enya .46 4stroke. More than enough power from both engines. I liked the 4stroke better. Would take it up to a comfortable altitude and fly along at "Just" above idle until the fuel was gone. Which was a long time with a four ounce tank. That's about all you can squeeze in there.
It can be a bit tricky to takeoff because the fuselage blanks out the rudder some until a bit of speed is built up. But once in the air she's a beauty.
Have Fun !!!