I concur with what the other pilots have said about staying away from the Starship. I was at the Beech plant for the first flights of NC-1 and NC-2 and knew the Beech Chief Test Pilot for the program. He was convinced he was not going to survive certification. He insisted that they install a bang seat in the test article and then married a very young girl because he was not taking the long view of very much at the time. I recall that during "cert" one of the airplanes delaminated itself at Guam. The canard was never as effective as it was designed to be and the resultant was very fast approach speeds.
If you have your heart set on canards and pusher props, you might consider the Piaggio 180. I did a closed loop handling qualities evaluation of the airplane for the military. It would hit 395 knots at 28,000 feet, climb to 41,000 feet and go almost 1750 nm. Don't get me wrong, I still think that if it has props, it belongs in the water, but this was not a bad airplane.
The former Gulfstream Senior Vice President for Marketing, Jim Holcombe, is now Piaggio's VP for Sales and Marketing. You can contact Jim at 864.277.3979.
GV