Publishing through Christian Faith Publishing

Asalaam Alaikum

I want to propose a question for people to respond to. A publishing company by the name of Christian Faith Publishing is very interested in publishing my book. Their team said it is very well written and informative. They are my target audience. I want to defend and tell them about the truth and beauty of Islam. My book would hit all of the major book stores worldwide and be available in Christian book stores as well. They will send out a press release describing the book to 4000 different organizations. So my question is:

Should I release my book right in the heart of Christianity with a book such as mine? Or should I Self-Publish with a smaller marketing campaign?

The objective is to tell as many people as possible about the truth of Islam, so this is a very important decision to make. Please respond via my Blog on my website Insha Allah.

Kenny Bomer