You don't "need" HCG, I use use it because I don't like the feeling of my balls vanishing and I recover quicker.
Nolva only for emergencies. Use the AI throughout your entire cycle starting day one (some start a week before).
Clomid PCT: 100/100/75/50 (day 1&2 take 200mg) Start 2 weeks after your last injection. Good luck.