My personal belief is that a SERM is necessary for PCT. There are other promising compound (decapeptyl) but still not enough research on it.
If you're not prepared to use a SERM to recover, I would reconsider using steroids. If you proceed you might find that all of these other products aren't sufficient and by this point you're months into a shutdown feeling horrbile.
Use a SERM. Even if you want to use it in conjunction with other things, use a SERM.