I would probably try posting this in the PCT section. Main reason being that although a lot of people in here have tried Epistane, there probably haven't been a lot that visit this part of the forum that have taken Epistane and this PCT and that will see this thread any time soon. I have never tried it personally. I guess it would depend on the dosages you are going to use.
I rarely do a PCT with Epistane but I don't usually go four straight weeks either. I do 2 on 2 off 2 on.