You do want to do PCT after the cycle. HCG will always help. When you begin taking gear, your body will naturally shut off natural production. HCG will force your body to continue producing test and it will keep your testes full in size. This way, when you do come off, your body is already used to producing test and the transition is not as hard.
If you use HCG, start in the last several weeks of your cycle, at 250iu, 2x wk. Use this right up to PCT.
As for how to run your PCT, 2 wks after your last shot, start Clomid at 100mg ED for 7 days. Then 14-21 days at 50mg.