Clomid is a SERM. It will block estrogen from binding to the estrogen receptor, but it will not block estrogen from forming. Estrogen will still be very high while using a SERM. Save your clomid for post cycle therapy. While on cycle, use an AI, which will block some of the formation of estrogen, keeping levels lower. Imagine a parking garage. If you wanted to keep someone from parking in your parking garage, you could fill all of your the parking spots with cars (SERM) or you can close the gates(AI), so that cars can't get in.
On cycle, a low dose of an AI like adex, say .5mg 2-3x wk sould be plenty, depending on the amount of test you are using. For a new user, 250 to 500mg Test E, EW is a good dose