8) Can I use Human Chorionic Gonadotropin (HCG) only for Pct?
No you shouldn't. It is better than nothing, but Clomid or Nolva are far better plans. Since Human Chorionic Gonadotropin (HCG) mimics LH, your body won't begin producing its own LH, as it sees no need to because test levels are high. You stop the HCG, your balls stop making test until your body begins producing adequate levels of its own LH, and that may take a while if you don't use Clomid or nolvadex to stimulate LH production. The use of Clomid or Nolvadex should also be continued at least 2 weeks after Human Chorionic Gonadotropin (HCG) is discontinued to avoid the v causing problems.
9) Can I use Human Chorionic Gonadotropin (HCG) during cycle and when?
Yes you can, imo to best benefit from Human Chorionic Gonadotropin (HCG) is to run it by the last 3-4 weeks of your steroid cycle. Do not run Human Chorionic Gonadotropin (HCG) if you're getting signs of gyno, Human Chorionic Gonadotropin (HCG) will make it worst, so be careful.
10) How much Human Chorionic Gonadotropin (HCG) is needed during cycle and/or pct?
For pct a minimum of 10,000 IU's Human Chorionic Gonadotropin (HCG) is needed. When you have a proper pct planned with a serm and an Aromatase inhibitor (AI), and you want to run Human Chorionic Gonadotropin (HCG) during the last 4 weeks of your cycle, then you might only need 5,000iu's.
An anti-estrogen (Nolva, etc.) is to be used with Human Chorionic Gonadotropin (HCG) during your last 4 weeks of cycle.