too long on the HCG and to early, run HCG week 8-14 for your age adex would be better and on a first cycle if you go overboard asin will kill your estro. Wait a couple of weeks even before starting the AI .
If you are using testE then youll start pct at week 14 after a 12 week cycle. First 2 weeks you'll take 100mg clomid ED and 40 mg NolvaED , next 2 weeks 50mg ED and 20 mg ED . Then during PCT a tiny bit of Aromasin can be added if desired.
I know its not as easy in England but best to get a blood test before you start , mid way through, and then 2-3 weeks after PCT is over.