Anti-E's with Winny and Anavar?

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I keep reading about how Wintrol inherently has anti-estrogen properties, and that Var is such a very mild compound, yet I was advised to take Nolva and Clomid as PCT. Is this really necessary? I understand that taking the precaution won't "hurt", but I'm also seeing that these two can cause raised levels of estrogen in the body, which will negate alot of, if not all progress made in regards to lean mass. Granted, this is a cutting cycle, but the whole point is to maintain mass/strength while ridding myself of bodyfat. Will the Nolva and Clomid be beneficial, or potentially a bad idea?