OK, Paul,
Now it is time for Jon Hus to weigh in. I’m not Catholic and I’m not LDS so I have no religious axe to grind.
You are getting some bad advice from some of your brethern (and sisterin) especally from the poster with the initials R…J. This is going to get me in trouble but it has to be said. My interest is in the innocent 3rd person in this situation. You and your wife are both being selfish, to each other and to your baby. However, my sympathy goes to the misses because your religion became of high importance well after the fact. You made certain agreements and now you want to renegotiate the contract. If you win, it will be because she allowed you to win because from a legal standpoint she has your @ in her hands.
Take religion out of this situation and replace it with something like a hobby or spectator sports. Then see how silly and tragic this whole thing becomes. You are a football fan, she is a baseball fan and you are fighting amongst yourselves on who will take the baby to the championship game.
Paul, you say you want to have your marrage blessed and you child baptised. I hate to break the bad news to you sir but you have no marrage to bless. Leagally yes you do and that part will cause you grief upon grief if you don’t find some kind of acceptable solution to your problems. If you two are to have happiness and harmony in your life together, then both of you are going to have to swollow some of your pride and compromise. Forget what your family and her family want, just forget it right now.
This notion of raising your kids to be two religions and allow them to decide will not work. If you proceed based on that premise then one or both of you will be disappointed in later life. But before that it would take super human effort to present two religions in a totally umbiased fashon for 20 years and given the rickety foundation your marrage is built on I doubt you can achieve this.
You and Mrs Paul need to clear the decks of your minds. Once you figure this out and if you have a relationship left, then try to figure out what to do about religion. But Paul, as a man speaking to another man, you sir, be the man. Take that first big step. Anyone can bark out orders, few can actually lead. A good leader will not ask those under their leadership to do something thay themselves would not do. Make a good-will gesture.
Sorry if I make you mad, as I stated at the beginning, my concern is with the baby, who as I see it, faces at best a confusing childhood.
Jon