I have purchased a used Monarch Butterfly with one hour of flight time (flight testing). I have been training for about 15 months in a 2 place Magni with my instructor. The Magni has a pre-rotator driven by the engine so it spins up to about 220 RPM before we start the take off roll. The blade speed in flight is approximately 320 RPM.

The Monarch has an electric pre-rotator that seems to get up to a maximum speed of 70 RPM with a new battery. I did a taxi with the blades spun up but didn't start going fast enough to have the blades spin up to take off power. I was worried that the blades would start flapping. So for the experienced Monarch pilots out there, is the 70 RPM the max pre-rotator RPM? What is the RPM that the blades reach for take off? (I have the Dragonwing blades). What advice to you have for me for my upcoming solo flight in the Monarch? How much of a takeoff roll should I expect? Should I hit full power immediately or should I advance the throttle more slowly?

Any and all advice is greatly appreciated!