Hi Bpfontes,
Thanks for posting the pictures. As work is already in progress, it could be prudent to keep access to the cable routes open until you are sure of the way that everything will be connected. If you can run spare shielded Cat 7 cables to each point from your central wiring hub/equipment cabinet, that will be a great help for "future proofing" when new technology comes out.
To address your questions about which products will work together, the simple answer is that all of them can work together, if they are set up according to your needs. The secret to a good installation is to be sure of what you want to achieve.
The best place to start is to sketch up a layout of the house, showing the rooms, speakers, TV, projectors, etc, plus any physical music players (eg. turntables).
Next, look at which audio and video sources need to be available in each room and add them to the sketch. If you have a group of rooms where you will often pass through whilst listening to the same music (eg. kitchen, lounge, dining room) then you can mark these in together as a "zone" to ensure that you have access to your music from all speakers in these areas.
For B&O wireless multiroom music, there is no problem as you can simply select the music to be played on each speaker as required. However, for Masterlink products, it can be helpful to identify where you wish to play the music to and control it from.
As an example, at home I have two "zones" for music, the first for my office and the rest covering the lounge, dining room, kids' playroom, master bedroom, family bathroom and ensuite bathroom. This is because there will only ever be one music source playing in the main area of the house (and my wife likes to be able to go from room to room without losing the music), but I may have something different playing in the office at the same time.
If you share the house with other people, their viewing and listening habits should be considered as well, for example if one person will play the turntable in the music room while you play CDs from the Beosound 9000 in the lounge, etc.
Hope this helps! Please ask if you have any questions.
Kind regards, Steve.