MVVS GRRT- 40 F3D on Patriot?
Im sure it will be fast but there may not be enough thrust. (like a car always on high gear too soon). Therefore on high angle, it can loose alot of speed. To compensate for this is to ensure that your Patriot is kept light. alot of Q-40/q500 Pylon planes are weigh under 4.5lbs.
Using a prop at least 9'' turning at least 15000 would be reasonable.