Good luck to you, let us know how it goes.
Both sides of the family are Eastern Orthodox by tradition. We grew up with everyone around us being the same religion by tradition, not faith.
We got married at church both for the fancy ceremony and to please our families and my son is baptized. This being said, my husband is agnostic/atheist and I'm atheist. My mother is atheist and my in-laws aren't too interested in religion, either.
I'm OK with my son going to church for special occasions. I'm OK with him learning about Christianity, just as I plan on telling him about the Greek gods without thinking he'll believe in them.