Original: BillS
Your delta suggestion is interesting. The tail section weights 1 pound 7 oz or so with servos. Maybe the delta suggestion can be tested with the skinny Bob Cat first since I have zero delta experience.
As long as the plane balances at 10.3" with the tail section removed (engine mounted and ready to fly of course) I see no reason why it wouldn't fly. Elevons are just a matter of radio programming. With any experimental test there's always a risk but your "GlassCat" is already going to be an experiment with a glow engine simply due to the weight. On the maiden flight of mine I had about 1/4" of spoilerons programmed in for landing and the test deployment at low speed (with altitude of course) nearly put the plane vertical and probably would have completed a loop if I hadn't clicked them off. There's no doubt in my mind this plane would fly without the elevator.