It is best to not allow the testes to degrade then attempt to restore. So take hCG or SERM all the time from day 2 onward.
Do not take high dose SERMs, do not stack SERMs and do not stack SERM+hCG.
Most advice about this on body builder sites is typically wrong. More is not better.
When you transition from PCT-->natural, you do not want the testes to transition from high LH levels to mid-normal. If the testes see LH levels drop like that, what are you expecting them to do?
SERM taper is extremely important.
Control E2 all through your cycle and PCT then cruise on 0.5mg anastrozole per week in EOD divided doses to support the transition, then taper that later on. SERMs increase E2. High dose SERM leads to a lot of T-->E2 inside the testes and the T levels there are so high that the competitive drug anastrozole cannot compete there and E2 levels can remain high and unmanageable.