when to add hcg

hi guys.i am 30 years of age .height 5'9'',180lbs bodyfat -14%.i am planning the following cycle for gaining-

test cyp-week1 to 12 -750mg/week
eq-week 1 to12 -500mg/week
d-bo-week1 to 4 50mg/day

please tell me when to add hcg and how much?is it necessary to use hcg during this kind of cycle?

i would take it as your doing alot of test. start it at the begining of your course or some ppl atart at week 4. 500ius ew split into 2. look in Q&A with swifto. loads of info