welcome to MC Bro, all the experienced guru's gave u awesome advice but If u are prepared and ready than nothing can stop, I cant advice u but can share my AAS experience, I was in the situation when I was even younger than ur age the only difference was I was crazy for strength not for size as I was a wrestler infact never wanted to gain weight , so went on aas on off basis for 8 yrs ,long story short everything was out at sky and torn both my knee ligaments and knees started getting dislocate due to over and excess training and the whole career got fucked up.Bro do enough research ,educate urself ,donate time, incredible article forum here on MC,chime on , gud luck bro