The thing with Nolva and Clomid, SERMs, is that they don't necessarily regulate estrogen. They keep it from binding to receptors in breast tissue, which of course causes gyno. So ideally in pct, you run an AI and a SERM to keep E low and keep what E is present from binding. Now Clomid does also raise HPTA function greatly as well as it's SERM effect. Nolva does as well, just not to the effect of Clomid.
I just don't know anything of that compound to tell you it is good enough to use as an AI or not. Not proven like Arimidex or Aromasin.