oliveDrab

Don't use that ... it's a quadcopter motor. Here's an example of a trainer plane from Hobby King that's got a 55 " wingspan: https://hobbyking.com/en_us/trainsta...___store=en_us
it uses a 3S Lipo, a 30 amp ESC, 850 kV motor all of which comes with the plane. Weighs just under 9 lbs.

Here's a video of the plane in action:
That plane flies great with a 3S Lipo, 30 amp ESC, and 850 kV motor ... and all that stuff comes with the plane. It even comes with a transmitter. All for $102. However, If you're gonna put a motor/esc/battery into your 57" plane... which is similar to the HobbyKing plane ... you probably don't need a 6S Lipo, 60 amp ESC, 400kV motor. I'll figure something out and get back to you with a recommendation.

Or maybe you should just buy that trainer from Hobby King. If you do decide to buy it, buy the "Mode 2" plane. It's got the throttle on the left stick.