Depending on how sensitive you are and how high dose of Test you are going to use, the oestrogen really starts only by week 3 about. Remember you want to grow and oestrogen is neccessary for growth, but in the right amount. Suppressing it too early, will diminish your gain potential. This is what I will suggest:
start your cycle and be on the lookout for sore nipples. The moment you start feeling some discomfort, add in the Nolva. Continue then until your PCT is finished. Start your Proviron towards the end of your cycle, say the last 2 weeks and continue until end of PCT.
Now, I know what the other posters are going to shout: But Doc, you said to use Nolva from day 1! Remember guys, this is his first cycle. The biggest gains are usually from you first cycle. He does not have bitch titties yet! If you even once had gynae, it tends to re-visit you much earlier on in subsequent AAS cycles - then, knowing you are going to suffer, you start preventing it by using low dose Nolva. As the cycle progesses, then increase the Nolva dose.
By the time you are a seasoned user, most of us use high doses AAS's that easily aromatize early on in our cycles - hence the earlier commencement of Nolva.
Knowledge is power!