Is that the three channel CUB you have?? I get a bit lost with them all. If it is then it is the same plane my grand son learned with and is still flying it. Thing is the kid was flying indoor choppers sense he was 2 and been on the Sim as soon as he could move the sticks. Been into RC cars before the choppers. I took him up with my trainer when he was 4 and the first flight I had to take control quite a bit, his second flight all I did was take of and land for him.
My point is, it can be done by some and the SIM is a big help. Not how I would go about it but give it a try. All you have to loose is the plane. There are more of them just waiting for you at your LHS. I flew every day with him over Thanksgiving and he just turned 6, he was still only 5 on that week. He is also not the norm. He is nuts for anything RC related. His little brother is into RC cars but not planes yet.
Good luck.