review my list please


Hello everyone. I am new to the high end world of home audio/video and am looking to build a system that i will be satisfied with for a long time and hopefully get it done on the first try. Music and Movies will have equal weight so i'm hoping for the best of both worlds. It will be going in our 2 story family room 23'x18'. The back wall is half open to the kitchen and the left side (facing the tv) is open partially to front rooms and upstairs rooms. I know this isn't a great room but I'm hoping it can sound great with only modest acoustic help. I would welcome any comments and suggestions in regards to the list of components I have so far. Thank you.here is my list.
TV- Samsung 85in. Q90
Mcintosh MX123 Processor
Mcintosh 8207 AMP
Focal Kanta 2 towers
Focal Kanta center channel
Focal 300-ILWCR6 surrounds
2X REL S-510 SUBS
Panasonic DP-UB900 Reference Blue Ray Player
Sonos Port Audio streamer
Audioquest cables
ronboco
Hello everyone. I think I’ve finalized my list. I’m going with the 8805 over the Mx 123 and switching to the blue sound node. Also Focal had a flash sale of 20 percent off so I upgraded to the Kanta 3. Thanks for all the great advice. I’m looking forward to seeing how it sounds. 
I spoke too soon ! I need some more assistance please. In regards to a dedicated 2 channel system I would be considering at a later date. Is a HT bypass amp all that I would need or is there more to it. Thanks ! 
You want a preamp with "HT bypass" mode.  The preamp would be connected between the Marantz 8805 and left/right chanels of the McIntosh 8207 amp.  When you switch the preamp to the bypass input, it essentially connects the 8805 directly to the amp, allowing you to do any movie/streaming as normal.

When the preamp is switched to another analog source, it would just play that source (such as DAC or turntable) through it's normal preamp gain stage and out to the left/right channels of the McIntosh amp.
Thanks for the help! I’ll start researching a good quality unit for pricing and compatibility 
Good day everyone. I did some last minute tweaking and would like some input on if I made the right decision. I have swapped out the 300 IW6 LCR in wall speakers for the Kanta 1 book shelves with stands for my surrounds. Sound quality and more adjustability was my reasoning. Did I make the right decision ?