well you want to have it on hand for when you feel any signs of gyno, if you get signs you will want to take it at 10-20mgs per day either till you signs go away or if you wanna be safe keep taking it till the end of the cycle.....so you could be looking at a varied amount of time for nolvadex use, depending on how prone you are to gyno and how you plan on combating it.....cycle otherwise looks pretty solid for a first one...if looking to bulk i would sub d-bol at the beginning and lose the winstrol at the end....