OP, a great problem to have!
As others have mentioned, I'd start with a dedicated room...pay attention to room dimensions, Greek golden method will get you in the ballpark. A badly designed room can ruin any great equipment purchases.
Pull at least a couple of dedicated lines for the room, at least one for signal components, and one for power amplification. Use audiophile receptacles (Furutech GTX-D(G or R...gold or rhodium) or Oyaide R1. I'd recommend that you NOT run an amp through the conditioner, IMO it should be plugged directly into the receptacles. There is some great information here to use. The best use for $1,500 to $2,000 you can make.
Reach out to Mike Major or John Dykstra at GIK Acoustics for room treatment ideas. They can help all of the way from design ideas to product choice, to placement, etc.
Make sure that proper speaker placement is taken into consideration first and foremost, then equipment placement.
Choose what pieces you already own will work in the new environment, and which ones will need to be replaced. You're getting great recommendations: maybe the turntable, power conditioner, and speakers are good enough already?
Have fun!