RE: Good beginner kit
I know this is somewhat a volatile subject. The truth is, you can't let your desires get in the way of what is needed.
If you have or currently learning to fly on the Alpha, then you should really continue to learn with the Alpha, or at least something very similar.
The real need of a basic trainer is to develop skills that are not quite there yet. Leaving to go to something else may result in disappointment. A Cub is a fairly basic plane, but not without it's dirty habits. It is by no means a trainer.
Many people continue flying basic trainers for years mostly because they are fun, strong and simple. You can relax and enjoy the experience it offers.
Keep with a basic trainer. Worry about a scale plane once you have a solid year under some easy wings.