There are dangers associated with starting AAS so young... I hope you've researched them. Another thing to consider is that after your cycle, you will essentially be a natural bodybuilder again for the rest of the year! What you do with this time, the "time-off," will define you as a body-builder and pave the road for gains in future cycles. I started AAS with a buddy. I researhed my cycle and PCT, my buddy did not. We both had great results. In some ways, his gains were better than mine. After the cycle, my bud said, "f**k natural body building." He stopped going to the gym and did no post cycle therapy (pct). I did my PCT, and used my "time-off" to learn to eat like a body builder, and to train like a bodybuilder. I took the time to fix my mistakes. Six months later, when were out together, it's my body that gets all the attention and compliments. He looks the same as when we started. I think what the vets are telling you is to become a bodybuilder first. Add AAS later, when your body has matured (inside as well as out). AAS can only take you so far. You still have to lift those heavy-ass weights and eat like a mofo!