Yeah your in for a challenge flying with one arm, I myself have no use of my right arm due to an accident years ago, it can be tricky trying to fly with only the use of one limb, the only suggestion I can give you is only set the things you really need to use as your buttons on your joystick, the things that you wouldn't want to let go of the stick to use, hopefully you have a joystick that has plenty of buttons.
