Thanks fort the educated response. I sent their church a letter and just asked questions.
I have some questions about your church.
1. What is the difference between you and the Church of Satan?
There are few similarities between Wiccan movements and the Church of Satan. As someone else noted, the Church of Satan is atheistic hedonism, with the philosophy of "Do what thou wilt." It is mostly show and their heyday was back in the late 1960s and early 1970s with the publication of "The Satanic Bible" in 1969.
However, the Wiccans are constantly fighting off the satanism accusations, so they will probably have a canned answer for you - if they bother engaging with you at all. Really, why should they?
2. Do you associate or allow fellowship with Unitarian Universalists and if so what is the difference between a Wiccan and a Unitarian?
Again, these are very different movements and they probably have not ever given the matter any consideration. What is the purpose of the question? Do you want them to consider Unitarianism? Why should they bother answering you?
You give them too much credit for having a rational basis of belief.
Since they are polytheists, I don't think that question is going to have the impact that you think it might have. You are speaking a completely different vocabulary than they are in terms of religious viewpoints and worldview.
May I suggest a different series of questions? Once you have answered these questions in terms of your own faith, you will be ready to have open and humble dialogue with others and find common ground on which to present Jesus as Lord.
Dallas Willard formulated these questions in this form, but they are not original with him in the sense that all great thinkers (including religious thinkers) have to deal with these issues in one way or another. I certainly worked through these questions in my journey from agnosticism to Christian faith:
1. What is the nature of reality?
2. Who is well-off? That is, what is the "good life"?
3. Who is a really good person?
4. How does one become a really good person?
5. How can one know the answers to questions 1-4?
There are good answers to all of these questions, and they are answered most effectively in the teachings of Jesus.
Once you have carefully worked out the answers to these questions from the teachings of Jesus (and the rest of scripture), then you are ready to engage competing worldviews and philosophies. Of course, this is hard work, but it is essential to consistently and effectively being a witness for Jesus. The teachings of Jesus actually center around these issues, so you are simply engaging in an understanding of the gospel when you engage the questions. Moreover, you will see that massively effective New Testament figures like Paul spoke directly to these concerns in his letters.
I can give you my answers, but having a set of pat answers that you copied from someone else will not create in you the kind of person who is prepared to do this work. It has to be a part of you and come organically from you. Moreover, I may be wrong and you can have more profound insight.
May God bless you as you engage these issues.