I'm not sure tubes would be the best match with those Wilsons. Perhaps I'm looking at the wrong specs but I think they dip all the way down to 1.9ohms. I would think a used Ayre SS integrated may be a nice way to stay in your budget and get some nice performance. Try as many options as you can for sure for making a final purchase.
AMP or Preamp
What to add next to my system, budget $5000 to $7000? My current system consist of Wilson Sasha speakers, Yamaha RX-A3050 receiver that I run pure direct, Rotel RB-1590 2x350 amp, Hegel DAC and a Bluesound Vault 2i streamer. I have been looking at a Mcintosh C2600 to replace the Yamaha receiver to give me the option of adding a turn table at a later date or would adding mono blocks give me the most bang for the bucks or other options?