what is exactly would be negative about starting a cycle at my current size?
for starters you are wasting your time, because you can make decent gains already naturally. its a waste of good steroids
also with you being young and inexperienced you need more Mass and strength, not just muscles but tendons, ligaments, bones, etc. if you start taking steroids your strength would increase too fast and you would most likely get injured. its not smart
also being young you are still maturing and growing. thats not the best time to start taking endogenous hormones
your diet is NOT on point. taking steroids now is a waste because you dont know how to diet properly.
your training may also be lacking. you havent been training long enough to even really know how to bulk or cut or train different mehtods, what works for you, what type of diets work for bulking or cutting, etc. There is much more you need to experience before you consider steroids.
and i can guarantee you bro, getting on steroids right now will only bring you disappointment. you are expecting to get jacked and shredded or turn into arnold. it WILL NOT happen. youre setting yourself up for failure