The only thing different from the situation you described is to do that with the engine running. You want to it with the engine running because it will show you if the vibration is causing problems in your electronics, also if there are any RF interference problems (this is more common on gas motors, but not unheard of on glow models). Also, as you range test move the radio with the collapsed antenna pointing at the model to it pointing away from the mode. Other than that, what you describe is doing just what you need to do.

Hope this helps