I am wanting to make another layout with a focus on getting the most height and elevation as possible. I am wondering if it is possible to do this layout in N scale? I would love to do this mountain and the two reversing loops on the two different level. I have the AR-1s to do the power reversing but my question is this....... Does it require manual switch throwing every time the train is in the loop? My wife likes to let the train run and forgets to keep an eye on it so is automatic switches something that is feasible?