https://forums.steroid.com/anabolic-...rst-cycle.html
Read this, at a minimum of twice.
Also, the answer to your question, was already answered by Back in Black. Your nutrition determines goals, not steroids.
I got the impression from your post you are apprehensive when it comes to needles? If that is the case then you will need to determine whether or not you are willing to risk being on TRT. Even with a "safe" (loose term) cycle, proper PCT, you cannot control your genetics. This is why some people get away with murder and Cycle+PCT for years and have their hormones stay in mid/upper ranges whereas other people cycle once and get shafted for life. How big is the risk? Who knows.
Also, your goals are completely unrealistic, even if you had a bathtub of steroids you are not going to put on 15lbs of muscle in one cycle. Will the scale go up 15 lbs? If you are in a caloric surplus, absolutely. Is it going to be 15lbs of muscle? Never. It will be partially muscle, and fat and water retention.
After reading the thread I linked, at a minimum of twice, I would encourage you to post your current meal program. Steroids are useless without an optimized diet and will only leave you with an empty wallet and angry at yourself for wasting your own time. Also, I mean no offense but 6ft+ and under 200lbs in my opinion does not correlate to an "in check diet" based on your goals (as per your initial post in this thread). Unfortunately, due to many factors (mostly social media + broken education system) many people think they have an good diet but in reality it's only a step or two above conscious healthy eating.
Knowing how to manage micro/phytonutrients, understanding self carb tolerances, carb cycling, how your own body responds to IF, understanding different types of fat and how to manage them, amount of calories/carbs pre+postworkout, are just some examples of education required to be successful long term.