Hey,
Go with the minnow. I have one now and it is sweeeettttt. I have a O.S. 91 2-stroke w/ a tuned pipe. I turn a 10x12 prop and speeds excess of 120 mph. If you loose an engine no problem, it takes it a min. to slow down but turns into a big glider. Grease the landing and your fine. Beautiful plane and holds true. I also use a 14x8 on it and it looks like it's going to rip the wings off on going vertical. Amazingly it handles aerobatic maneuvers well too. Use your best judgment.