I'm currently looking at getting a plane from the local hobby shop. It is a hobbyzone piper cub rtf and there are people that can help me learn to fly available. I know that it already has a 480 size motor, I'm wondering if anyone knows of a good brushless motor/esc i could replace it with. Also, with stock electrics (using the included 1300mah battery), does anyone have a rough guess on the flight time i should get? I already have 3 other 1300mah 3s lipo packs that i use in my crawler that will work in this as well. Would 20 minutes per pack be a good ballpark estimate? Thanks for any help.