Let me just start out by saying Im sorry if I sound like a dick but what Im gonna say is to keep you from doing something you will regret. Ok first off the way that you pose the question seems like you have not done as much research as you claim.
I would think if you had done the research the question would be more like ok I have looked at compounds A B and C . These would be the doses I would be doing what do you think. I am Going to stay on for this long and my PCT would start at this point end at that point at these doses. So with that said coming from someone who has had gyno issues in the past. If you are getting sore nipples from a product bought over the counter then real gear is a risky endevour. Now with that said there are things that can protect you such as Nolvadex ,Clomid ,Arimidex during your cycle and as a PCT after.
If I were you the compounds I would be looking to use would be either nonaromitizing(which is not a garuntee you won't have sides) or lighter compounds such as EQ ,Anavar , Primobolin. If you are suseptible to gyno like I am you have to be super careful or you could fuck yourself up for good. There is risk for every reward.
Give some stats hieght weight age and the compounds you are considering. Do not go about this without the most complete knowledge of what your taking the risks of taking it and how it effects your body. Everyone responds different but get educated. Be smart man take it from someone who was not always smart about it and got bit in the ass.