I think the Cub would be ok for a 2nd plane. A 4*60 wouldn't really help as a Cub trainer because it's faster and more responsive than a Cub. They both land about the same speed though(very slow). Your trainer flys more like a Cub than the 4*. Generally the bigger the Cubs are, the better they fly. The ground handlying on some Cubs is tricky but the GP Cub isn't too bad. Should be fun!