You have a very small chance of steroids effecting your growth plates, Now your HPTA is another story.
Anyway. The main reason I tell younger guys not to cycle is because unless there genetically gifted and want to take it to the next level in sports,bodybuilding, powerlifting, etc then you really have no need for them, You say you gained 60lbs from 170 in a year to 230. Now me personally I have a hard time believing your at all lean ( no offense ), I mean if you just gained 60lbs then why are you even asking about steroids??
Plus for your weight those arent very impressive lifts at all.
Overall I doubt you would listen to a couple of guys online so in honesty why dont you post up your routine, diet, and detailed cycle plans.