You should have an anti-estrogen on hand while on cycle in case you experience any estrogenic side affects, such as nolvadex, and if so you can take 20mg of nolvadex a day or also arimidex, which is more expensive and may negatively affect blood lipids. Because you are running 500mg a week of eq i would start your PCT 14 days after last injection, because the undecylenate ester greatly extends the activity of the drug, longer than test e. From all the research I've done everyone does their PCT differently. the way i do it, 14 days after last injection HCG is taken at 2000iu every other day for 20 days, Clomiphene citrate 50mg is taken twice per day for 30 days. Tamoxifen Citrate is taken 20mg twice per day for 45 days. start all on the same day. Hope this helps.