I have the Aerobird by Hobbiezone and I haven't flown it yet. I want to hear from someone who has experience with with this plane as to the turning radius with the stock V-tail. The manufacturer recommends an open area of at least 300' diameter to fly this plane. Does it take this much room to maneuver it?

The book says it will fly at about 20mph. Can the plane stay airborne flying slower than this? If so, at about which throttle, a 1/4 or 1/2?

Near my house is a field about 150' wide and about 300' to 400' long. Is this room enough to fly this plane?