Moving to a new home and need set up advice

I presently have a dedicated audio system consisting of a digital and an analog component.  Roon into a Bryston DAC, also an old Sonos Connect to the Bryston DAC, wired over to a Cronos Magnum tube amplifier to drive a set of Linn speakers.  I also have a Thorens TD 124 connected to the Cronos Magnum for when I want to listen to vinyl.  Pretty simple set up that sounds great to me.

I am moving into a home that has a large family room connected to an open kitchen. Above the fireplace is the TV (not a fan). The TV is connected now (previous owner) to a Sonos amp that I think connects to a sound bar, two overhead speakers plus a set of overheads in the bedroom and the porch.  He will be taking his amplifier I am sure.

What do I replace his amplifier with? Where in the room do I set up my stereo system?  I always confuse myself when it comes to sorting out and changing my system so want advice. I hope the picture comes out.

I am thinking to put my dedicated system against the left wall from the fireplace/bookshelves and keep it separate. Then, get the same Sonos amp and soundbar and replicate his system.  Is there a better integrated plan?