Do you fell clergy are important in the craft?

That seems like it would be a personal preference. Wicca is a separate religion and it depends on whether you can maintain two religious beliefs. Wicca is very tolerant of other religions, but many elements of Christianity do not want to be involved with the practice and beliefs of Wiccans. There are some common threads and some distinct differences. Each Wicca can feel free to integrate various beliefs in a way that feels right for them individually. If you feel that clergy are important, then that is the right path for you.