Cox Phoenix Ultralight - Gas
I had one and actually got some flights on it. It was a bear to fly to say the least!
It needed to be hand launched and was VERY tricky. I believe we had an OS .10 or .15 in it.
With the small servos available today ( I flew mine nearly 20 years ago on a World Expert radio), getting the weight down will do nothing but help. It was a b***h to get all tat stuff into the pilot's body.