You need to do some more research. You won't have too much testosterone because your natural test will shut down because of the sd. I've done a few sd cycles and it is true that it is a mild anti-e on its own. Gyno is not a problem if only taking sd. Nolva is best, a lot of people like rebound, but
6oxo will work just fine. If you ever end up with too much testosterone, write a book because everyone else would love to know how to do that. Watch your bp.