Multiple Xbox' at one address and one family

Hi,

I'm in the happy situation to be an owner of a Xbox One X and I'm exited for the pre-order of the Xbox Series X.

But now I'm in dubio for how to organise this in my house. Can anyone advise me how to set this up, I'm not unwilling to pay but I'd like to do it in the most economic way .

Situations will be:

1. The Series X will come in the living room at the 65" tv.

2. The One X will come in the master bedroom in which I have my office too.

3. I (father of 2 gaming daughters) have a GamePass subscription

At this moment my daughters can game happily on the One X and can play all my purchases without me joining their session.

Now I'd like to achieve the following:

- My daughters should be able to game on both Xbox'. So they don't occupy the TV in the livingroom when the parent want to watch.

- If we play together (online multiplayers like Fortnite/Destiny 2) I don't want to be forced back to my old One X.

The situations I already considered are:

a. I make the living room Xbox the family Xbox.

Then my daughters can game in the living room like it is now. But then I'm forced to play on the One X because there is no Xbox Live Gold/Gamepass attached to the One X. Is this right?

b. I make the master bedroom One X the family Xbox.

The kids are forced to play on the One X, that's not too bad, but the master bedroom is also my office nowadays. So not preferable unless I move the Xbox to a better location in the house. But can they still play splitscreen on the
Series X with Borderlands 3 for instance? Given the fact that they don't have any subscription on the Series X. The downside at this is that they won't be able to play on the Series X with their friends. Is this right?

c. I buy a additional Xbox Live Gold subscription for one of my daughters and make the second Xbox my daughters family Xbox.

Are they still able to play games from my Gamepass Subscription that I installed on that device? Downside is that I have to pay for an additional subscription, but that is acceptable when they can play my games from Gamepass

d. The last and definitely working solution is to pay for an extra Gamepass subscription for one of my daughters.

Economically this is the least preferred solution.

Can anyone please advise me?

:)