to the OP a Pass , Belles or Ayre SS preamp would be on my short list IF i was in your anti tube position….. i do get it….hand off an easy to use system to surviving spouse ( my plan is the NAIM Uniti Atom, which she loves )….
You are in very good hands w Nelson….
by the way a multi layer, heavy curved trace board is WAY better than point to point….unless you like…..noise….