I saw some nice simple round wooden feet at AliExpress. Perhaps ask them for 4 simple square or round legs, you pick diameter i.e. 60mm and thickness i.e. 40mm, forget stud, just matching wood for double face attachment.
My JVC Plinth legs provide +/- 40mm clearance (adjustable). You need clearance for the tonearm cables, more if DIN below. They make right angle DIN Connectors, Pine Tree Audio made me a special din/rca phono cable for my Mission Arm to my SUT.
btw, I never realized, with 2 arms, you need a way to select which arm goes to the phono stage. My Vintage McIntosh Preamp has two mm phono inputs, then I added a 3rd arm, I got lucky, my Fidelity Research FRT-4 has 3 front selectable inputs, one phono out to MM phono 1. Pass is a good feature if you change from MC to MM occasionally on either arm.
My friend's Luxman 444 two arm deck has it's own built in a/b box, a nice feature