I would be inclined to buy a used pair of LS 3/5a speakers or the Kef 101 or Linn Kan. You have the amp to run them well and you might be shocked how fantastic they are. ;-) Congrats on your windfall and enjoy the music.
Note i never recommend products i have not heard, i might have missed a few variants of the BBC spec LS3/5a… but the standard gives me confidence here. I’ve owned both the Kan , Kef and Rogers.