Don’t forget the motherboard. I got an Asus ROG Maximum VIII hero last year. Excellent! Also, I would highly reccomend an m.2 SSD The speed will blow your mind. Go with Samsung m.2
Hopefully this year’s motherboards have better options for more of these drives. The Asus has m.2 express ports but only intel makes drives for them so they are stupid expensive.
Yes, skip the sound card. A decent motherboard’s onboard system does a great job. You can always reconsider later.