Flying field size and T-rex 600. Is a football field big enough for a beginner?

[stvjeep]

My primary field (backyard bordering other houses with tall trees surrounding) is 120m x 50 m or roughly the area of an American football field. Is this large enough for a beginner to fly a 50 size heli (T-rex 600) in?

[TheBum]

It should be plenty large.