I'm not a steroids expert but I do know you can't raise testosterone levels without raising etrogen. Generally when you get off the gear testosterone goes back to normal but estrogen can remain hightened.
So say you have 3 parts testosterone for every 1 part estrogen when normal. Then you get on the gear you go 6 parts testosterone compared to 2 parts estrogen. Thats all well and good while you're using, but then you stop. You go back to 3 parts testosterone to 2 parts estrogen which is not good. There are things you can do about it but I suggest doing you're homework before making a decision.