On the finish (I use exactly the same BLO wet sand (800) on my L200s), I do not use wax, just oil it once a year or so.
(My parents had some Eames walnut chairs that they treated lovingly with johnsons paste wax for 40 years, and it ruined the veneer, clogging it up with build up. So I don't use paste wax on any wood/veneer furniture).
Others more knowledgeable than I may chip in, but that's my take on it, anyway.
BEAUTIFUL WORK, BTW!!!! Thanks for sharing.
PS. What did you use to replace the old foam in the mids with?