Totem Metals V2 -suggestions

I am going to order the Metals V2 from a local hear in Sweden and I also asked the seller if the the Totem Tribe solution sub is a good complement to the Metals v2. I was thinking about adding 2 x subs which will be 4 8" drivers. These are driven by internal amps as I understand it. What do you guys think about this idea? I auditioned them with Prima Luna 400. Which electronics go hand in hand with the Totems Metal V2? I was thinking about Pass Labs either the 2 x 150W or 2x 300W mono blocks. Please let me know if there is any electronics you do feel is better suited. Any other tips on how to optimize the sound from the speakers? This is my living room. Any other suggestions? No budget on the electronics. I´m going for a streamer solution and have heard good things about DCS Bartok, but if you have any other suggestions, let me know.

This is my living room.
https://ibb.co/2g1VjQp