i am on the side of having a difference of opinion on child rearing being a deal breaker. Having children and how to raise them is of the utmost importance of agreements in a relationship. I don't believe this is going to work as whichever way you two end up going, one is going to feel resentment; which, is a relationship killer.

BTW my daughter wasted 7 years with a man who when it came down to it (at the very time they were about to send off the wedding invitations) suddenly admitted he didn't want children. She was devastated but I think made the right decision to call it off and move on.