Your hypothetical Catholic wife can only be a Catholic mom to your hypothetical future children–she can’t be an Orthodox mom, because she’s not Orthodox.
Think about what you want for your hypothetical future children and think about whether it’s very likely that a Catholic woman can provide that for them.
Less dramatically, I’m an ethnically WASP Catholic convert woman with an ethnic cradle Catholic husband. I do not provide the “ethnic” component of our home life (such as it is). I am quite happy to go along with it, but I don’t drive it. My husband and his family have to provide that element of our family life.
If you marry a Catholic woman (even if she is friendly to and tolerant of Eastern traditions), providing an Orthodox home for yourself and your children will be on your shoulders.
Also, come to think of it, the various Orthodox fasting and dietary stuff is also a large obstacle to combining homes.
It is an interesting problem, because on a high doctrinal level, there’s not a great deal of difference. It’s in the day-to-day that I think you’d see major difficulty (unless both of you were very lax).
As far as fasting is concerned, this is not too much of an obstacle, as there are Byzantine Catholics (similar to Orthodox) who have similar fasting requirements and who are married to Roman Catholics.
That being said, I do agree that on the Catholic side, providing for a serious Catholic family is essential, and that on the Orthodox, likewise to provide for a serious Orthodox family. In Eastern theology, the family is the “domestic Church”…and what kind of a “Church” do we have that cannot commune together? This is something the OP will have to work out with his future wife, and if he wishes to receive the Holy Communion of our Lord Jesus Christ in the Catholic Church, he will have to receive permission from
his own (Orthodox) bishop. I do not know whether or not it has ever been granted by the Orthodox authorities to an Orthodox Christian to receive Holy Communion in a Catholic church (after the ancient split of the two).
Other than Divine Liturgy (Mass), what kind of prayer life are the OP and his wife going to have? The Eastern tradition places a good emphasis on the Divine Office (Vespers…and Liturgy of the Presanctified Gifts during Great and Holy Lent, in which, if the children are raised Catholic, they cannot receive in an Orthodox church).
What about education of the children? Speaking for myself, I would like to place my children in Catholic schools, so that my children can be educated completely—spiritually and academically.
I am not overtly encouraging or discouraging the OP one way or the other. While I have my own opinions, I acknowledge it is not my situation. I am simply placing things out for consideration. Eventually, you (the OP) have to work things out, with a great amount of prayer.