You are doing the right thing by using the sim before you fly an expensive and fragile plane. You're sim experience is totally transferable to the real flying. Especially using AFP. There will be some minor differences but if you are using the transmitter that actually use to fly, it's even closer.

Keep practicing. People will be amazed how you can fly so well for such little real flying time. The thing I'd say that changes the most in real flying is the wind and wind gusts. That is one tricky thing to master since it's pretty much random. You can set the sim for wind and wind gusts but the real thing is better practice. The best thing that the sim does for me is insures that I don't get my stick directions reversed when I'm in critical situations (rolling into a knife edge at 1 foot off the deck).

Joe