When you say natural, do you mean legal gear too? No superdrol, m1t, and the likes? If so, you got an awesome base at your age and have serious potential. I was about 25 pounds lighter when I was your age, and we are both the same height.
Lastly, for your sake, I hope that you just have a lot of hair under that cap. Otherwise, you have overtaken Branch Warren in both the "biggest forehead” and “lowest face” categories.