It is a bit early for you to use AAS. You need to build a stronger base in order to get the maximum benefits out of the steroid. I mean, you could as well use the steroids, but it is more reasonable to use them when you hit a plateau, and your growth is halted. Until then, on the initial stages it is much easier to make the gains, and you would be using steroids for something you could achieve on your own.
A good alternative would be SARMs - they will give very noticeable results, they are much safer, and more convenient to take (orally). What's most important, they will get you conditioned for a good AAS cycle. Besides, in bodybuilding it is best to be gradual, and not try to get all the gains at once. Start with the milder compounds, and slowly grow into the stronger ones.