If you wish.
But here something else to think on...
I'm doing the workouts from "New Rules of Lifting." Alwyn Cosgrove wrote the programs and he's one of the most knowledgable guys in the industry.
He has curls only once in his nine programs, in hypertrophy II and they aren't even preacher or isolation curls. They're towel curls (wrap a towel around a DB and use the towel for the handle).
If he doesn't put preacher curls in his programs, it must mean they aren't necessary.