The "tingle factor" is just a sign of infatuation.
If you are willing to spend the rest of your life digging ditches with the person, and you will be happy doing so, that is the kind of love required for marriage. So, I guess to me, it's a kind of intimate companionship.
Believe me, I've found out what the "for worse" part of marriage means. If you don't have the ditch digging attitude with each other, you aren't going to get through it.
What makes one guy see a person as a good ditch digging partner is different than another guy. It seems that one of your criteria is the status of their outward faith. So, you should go with that. If you know you won't be able to survive dragging someone to Mass that doesn't want to go, you won't be happy, and that will cause problems. Maybe some other criteria will override that, though.
Enough problems will come up on their own as surprises. If you go in thinking you will change someone, you will just be frustrated and miserable because people rarely change for the better.
You get one marriage. Choose wisely. No pressure, though