Hey OP - Epistane is just a form of Epitio/Epithio steroidal compound that is similar to Havoc.
Most people run it for a first cycle at 10/20/20/30 or 20/20/30/30
You're DEFINITELY going to want to do your homework, but PCT or Post Cycle Therapy is STRONGLY advised. I also personally advise utilizing the power of a SERM or Selective Estrogen Receptor Modulator!
In addition - you're going to want a Natural Testosterone Booster, such as POST Cycle Support that can also aid in hormonal regulation and provide a libido boost
To prevent the rebounding test from aromatizing into estradiol (estrogen that can promote secondary sex characteristics) look into ATD or 6-OXO to begin in week 2 and taper down through your 4 week PCT cycle.
Additionally, check out Cycle Support, especially if you're going to use a SERM. SERMs are harsh on liver enzyme levels and cycle Support or Liver Longer (another good one) are good for promoting liver detoxification and promoting strong metabolic function and BP regulation (two of the many processes controlled by the liver)
I3C - Indol-3-Carbinol is relatively new to the research world in regards to estrogen control, but it acts as a great hormonal regulator during this taxing time on your endocrine/hormonal system.
Also check out an optional addition, Lean Xtreme for Cortisol control - a natural glucocorticoid that is a catabolic steroidal compound.
Good luck!