Nolvadex and clomid are SERMs. They are typically used for PCT. There are certain situations where using them on cycle is necessary but that is usually due to certain compounds being used.
The preferred method is to use an AI (aromatase inhibitor) on cycle. That way instead of just keeping estrogen from causing gyno you will be controlling the estrogen. High estrogen can cause water retention, high blood pressure and libido issues to just name a few.
The main three AIs are arimidex, aromasin and femara. Femara is heavy duty so stay away from it unless it is necessary. I would try to find arimidex or aromasin for your on cycle estrogen control and save the Nolvadex for PCT.
You stated 60 ten mg tablets of Nolvadex. A typical PCT dosage would be 40 mgs a day for two weeks then 20 mgs a day for two weeks. With what you have you could use it with a lower dose of Clomid and have a productive PCT.