I think the opinion you are going to get here is the need for patience. Your natural anabolic environment isn't ever going to be much better, you may still even be growing.
Most guys I think are going to suggest this is the time to learn what you are doing and take advantage of your bodies natural hormonal environment and put on a base of mass. I only sort of joking answered a question to somebody who asked me how long it took me to learned to do lat pulldowns the way I was, that it took me about 8 years to fully figure it out (an exaggeration but not without some truth).
AS really aren't the "quick fix" I think they sometimes believed to be by those outside the weightlifting community. Most guys who use them with success are those who have taken a long term approach.