to be honest with you, one should not even start an Aromatase inhibitor (AI) (unless their e2 is already high!) until at least week 3-4, then have bloods done to see how the test alone, or the test/hcg are effecting ones e2 levels,
how would one know if they even need an Aromatase inhibitor (AI), unless they test after being on Hormone Replacement Therapy (HRT) for a small amount of time?
unless your already high on e2 levels that is!
it is also good to start test as a stand alone, to gauge how much of it is getting turned into e2, and plan from there adding in hcg a few weeks later and then getting tested again to see where the e2 levels are at.
as far as the hcg goes, mine is the day before, or mid week for that boost mopar talked about!
if doing 2 shots a week of test, one could split their hcg into two shots, the day before, or the day after their test shots!