There are a lot of differences between a Catholic and a Born again Christian. You should look into the Catholic religion to get an idea and then you will have a way to have a conversation with him regarding the differences. I don't know anything about midwestern christian church. Make sure that both your beliefs mesh.
It is hard to be married to a non christian and not to be able to discuss your beliefs and your goals. Make sure you can talk and know exactly where you both stand. Being married to a non christian is lonely and puts a wall between you. It also puts you into arguments regarding morallity.
Check out the book blue like jazz by Donald Miller. An actor has put together a one man show based on the book.
www.bluelikejazz.com (book)
www.bluelikejazzlive.com (show)
If you want to take a trip to Toronto Jason Hildebrand is playing there soon.