usually I do 20/20/10/10 for nolva. never done hcg or clomid although alot of people take it. Honestly nowadays I see people taking a whole new cycle for pct lol. I don't take clomid due to the emotional sides that come with it. I would throw in an AI like aromasin, a good natty test booster/ pct supp, and excellent training and nutrition to maintain the physique you built on the sauce.
a good pct is important. But at the end of the day in my opinion training, diet, and how close you are to your natural limit will determine how smooth the transition is.