i cant stress what enhanced has said enough! he is right, as i have posted in the past, it is best, unless overweight, to start with test alone, after a few weeks, test to see where ur e2 levels are to see how much test alone is converting to e2, then gauge your Aromatase inhibitor (AI) based on those numbers, from there run it for a few weeks, to see how your responding, once your dialed in with that, one can add Human Chorionic Gonadotropin (HCG) if warranted, but then again one will have to see how their e2 levels rise from the addition of Human Chorionic Gonadotropin (HCG), again if warranted, then its back to dialing in again with the Aromatase inhibitor (AI), from the added Human Chorionic Gonadotropin (HCG),
good luck, hope you get the results ur looking for!