RE: Ailerons???
I'm going to open this back up because I didn't see this mentioned.
Of course someone can set up their radio any way they want, and you may find something you like better than the standard. But if you ever want to have someone test fly your plane, or if you want to fly someone else's plane, then you should go with the majority and keep it simple, go mode 2. Throttle/rudder left stick. Aileron/Elevator right stick.
And yes, with this set up, if you have a rudder only plane, you can just let the right stick control the rudder and you won't have to make any adjustments yourself..