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?