Pro dj link and expanded setup

Hey 😀 I have a tricky question, and this seems like the right place to ask. I have 1 Djm900nxs2, 2 xdj1000mk2 and one toraiz sp-16. They all work flawlessly together in pro dj link. But here is the tricky part. If i buy an additional Xdj xz, will they all work together in pro dj link and i can assign deck 1-4 across mixers? The connection will be like this: Both Xdj1000mk2, the Djm900nxs2 and the toraiz sp-16 goes directly into the ethernet switch. So will the xdj xz from the extension ethernet port or both of the channel 3 & 4 ethernet slots. So the setup will be using 5 or 6 ports in the switch. But the toraiz does not count as a player, because it can't take over the master bpm, it just collects bpm from the players, so it wont take up one of the 4 maximum pro dj link slots. Neither will the Djm900nxs2. So 4 decks in total. So then assigning decks 1-4 it would be 1 & 2 from the Xdj1000mk2s, and 3 & 4 from the xdj xz. And it will be all run from a computer in rekordbox export mode ofcourse. The xdj xz will run as 2 additional decks with its own mixer. This should theoretically work right? I have drawn a diagram here: https://ibb.co/h1NhRd4