Empty weight 360, flight weight 560. Yamaha engine , 138 hp at 8300 rpm, 94 ft lbs at 7100 rpm. Using a 3:1 reduction and a 69 inch 3 blade kool prop , clockwise pusher, sabre shape pure carbon for higher rpm on the top end. The hub adds 1 inch so actually a 70 inch prop. Using a 26 ft rotor from tango gyos, or a 26 ft from sport copter. Cruise speed 65 mph and takeoff altitude of 6000 ft. So do these numbers sound realistic, any suggestions ? Thank you for your time.