Hum u have some reason in what u say

iam 23 years, 178cm and i work wout over 3 years. i start going to the gym with around 60kg and i got this year to 78kg and ATM i just cant put on weight, so i look to AS as a bridge to jump this barreer.
I have a good diet that i follow every single day, i train well, i do my suplementacion ( whey, otmeal, casein, creatine, vitargo, VIT B, C , E fish oils ) and this is the reasons why i pick AS.