RE: Sticks setup
The way you have your sticks setup is called Mode 2. This is an extremely common way to fly and you should have no problems in finding people to help you once you are up and running.
The use of rudder in a turn keeps the aircraft 'balanced'. It basically stops the aircraft flying sideways. In a lot of models you can fly OK without using the rudder. (sailplanes are an example where the use of rudder is almost mandatory). In nearly all models the use of rudder will improve the flying characteristics.
In a full size aircraft the neglect of rudder causes the flight to be very uncomfortable and most of the passengers would probably puke very quickly!