The problem with nolva is that it my cause a estro rebound after you discontinue use.
This is because nolva occupies the estro receptors and your body reacts by creating more estro receptors. Then when you stop using the nolva, your body has more estro receptors and you get problems like female pattern permanent fat storage.
Proviron might be an option, but that opens a whole new can of worms with your anabolic receptors.