ORIGINAL: Kavik Kang
I think I am going to skip the whole "second plane" thing, but would recommend that most people don't. I have a lifetime of relevant experience to flying these planes, and a long history at excelling at exactly this type of thing. Most people probably should use a "low wing trainer" as a second plane.
Many people would classify the ARROW as a first and second plane...it is a 'first plane' when the control throws are toned down and your instructor is helping you along and through the solo. It is a 'second plane' when you start flying inverted, doing rolls, loops with rolls at the top and some knife edge flight.
You can instantly verify how good you will be flying an R/C plane. Go to your local hobby shop and pick up the simulator transmitter. Make sure the plane selected is a trainer plane, just to be fair, then take off and try to fly it around. You'll know within about ten seconds if you already know how to fly or if you'll need a little instruction. Oh, and with instructors that are helping you for free, a little humility will go a long way.
Best of luck! You'll do great.