AAS stands for anabolic-androgen steroids, and as Clinch said anavar will shut you down and your body will stop producing testosterone and you will feel very bad (i have first hand experience with it!). So Testosterone should be the base of every cycle.
Best first time cycle is test only as you can find in educational threads, but not at 20% bodyfat. I'm personally always remain close to 10% even when I'm bulking!