Main System (existing pieces until future upgrades bit by bit)
McIntosh AMP
Adcom Preamp.
***Full Featured: Phono MM and MC; Capacitance choices; Mono; Balance; Tone Controls; and Contour (their version of low volume compensation, boosts bass)
***Two sets of Outputs (allows second system: use Adcom Amp, Golden Preamp with Totem Mites with self powered sub)).
Luxman TT
B&W Speakers
Existing Tuner/CD Player
Sell all the other stuff, including the Tuner if you have no use for it.
Niles speaker Selector: they make good stuff, but for what? You need wires to and from for the main system, not good. Nearby Kitchen Speakers? Better to buy a little compact Bose or other gizmo for the kitchen.
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Then, bit by bit, upgrade the main system, and use pieces from the main system in the 2nd system if appropriate.