The 62" J-3 Cub would probably be a good next step, logically. But you are looking at jumping into a different size/scale of aircraft, which means bigger motors, bigger batteries, bigger ESC's, and most importantly......bigger $$$

You are definitely going to need more space moving up to a 62" wingspan. So that may be something to consider as far as having places to fly. You could find some sort of way to disable the ailerons if you wanted to, but honestly, if you go easy the first few times out, I think you will find it much easier to control the plane with the ailerons operational. You really don't even need to use the rudder unless you are performing aerobatics/tricks.

If you want to stay in a similar size/scale of aircraft, and be able to fly at local parks, etc, I would look at the Cessna 182 http://www.e-fliterc.com/Products/De...ProdID=EFL2200 That would be the logical jump up in a similar wingspan. Now if you want to push it a little, go with the Mini Pulse XT http://www.e-fliterc.com/Products/De...ProdID=EFL2375 It has different characteristics, being a low-wing setup, but is really docile if you take it easy. It would be a bit of a jump, but it's flight characteristics make it a good jump up for a beginner looking to let loose