Are there any holes in my plan

This is somewhat complicated, so I’m looking to make sure my plan makes sense.

My wife travels a lot for work, I do not, but I do fly Delta from time to time. We have a very large mortgage payment and put a somewhat similar amount on cards each year, my thought is this: I open a palladium card, make my wife an AU, have her configure the mortgage under her account, do flex, and split the cash/points, then we route as much spend as humanly possible to her card, she will pretty easily hit 200k in points each year, so she gets platinum, I will get platinum because the overall card spend will be over 50k, that way we can both put 10k points toward flying blue status, and she can participate in things like rent days to get hotel status (which is more valuable for her than me).

Does this plan make sense? Any holes or gotchas?