"along with the prima Luna phone stage"
please give us the model number so we know it's capabilities.
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Think long, think a few cartridges, perhaps MM, MC, and Mono, thus at least an arm with changable headshell, or, better yet,,the possibility of a second tonearm, with an alternate cartridge ready to go in seconds.
Two tonearms is terrific, but you need to figure out how to select the alternate arm/cartridge.
My vintage Tube Preamp has 2 MM Phono inputs
In my case, 3 arms, I use a SUT with 3 inputs and PASS for MM, and
I helped my friend with his wonderful Luxman Two Arm TT PD-444 which has a built in switch for the two arms.
This one has a new dust cover and two mounting plates
you could pick a single arm to get started, add a second arm later. We put two Micro Seiki 505 arm's on his, 12" long on the rear left, 9" on the right. both removable headshells,
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I helped my friend with a very versatile Technics SP-15, with the terrific arm base with instant arm height adjustment, changable arm wands, one of which is an S arm with removable headshell, it was/is a 3 speed monster, the modern units specs don't surpass it