Tube pre/SS amp to replace Plinius 8200 integrated

Hi everyone,

I'm contemplating replacing my integrated with a tube preamp and SS amp. Can anyone make any recommendations? Looking for the typical warmth, harmonics, air, etc. for mostly jazz, classic rock and classic alternative. My particulars are listed under "system." Any input is greatly appreciated. I'd like to purchase used and keep the budget under $4k combined. After this, I figure I'll work on speakers. I say that because my wife likes the soliloquys more than the other options I considered (also listed under "system.") Thanks!