Hi Jayson, welcome to the forum. It is really up to you. My opinion is a CuC is not a necessary part for a successful reef tank, but there are some interesting critters that add life and personality to the tank.
That being said, I think the recommended packages from reefcleaners.org is a good starting place. I have ordered from them as have many here, and they do a pretty good job estimating an appropriate sized crew:
Quick Crews : Quick Crew w/Hermits (36 Bowfront) - Reef Cleaners