RE: Three Channel or Four?
G'day Mate,
As was stated above, it will make little difference which type of wing you have, with ailerons or without.
With ailerons & no dihedral, it will be less stable, will not level itself, must be flown all the time, & your primary roll control, ailerons, will be the RIGHT stick, (assuming mode 2)
Without ailerons & plenty dihedral, it will be nearer to inherently stable, in other words it will level itself, to a certain extent, & your primary roll control, will be on the RIGHT stick, & it will be the rudder. (assuming mode 2).
So, you will not learn to fly using the rudder, on your left stick, if you don't have ailerons, because the rudder will be on the right stick, not the left, as it would be, if the wing had ailerons.
This is how the plane SHOULD be setup.
But it sounds like you have made your choice, good on ya, go for it, & the best of luck to you, I don't think you will have a problem.