Need Recommendations for KVM Usage Servers

Trying to figure out compatibility here with Dell PE servers. Will buy either refurbished 13th or 14th generation 1U (or 2U) servers. Servers will be used for VPS hosting, virtualization (KVM) using Virtualizor software.

System: 1U Dell EMC Server or 2U if necessary

CPU: Dual Intel Xeon 20+ Cores
RAM: 512GB (or 1TB)
Raid: software raid for best performance
Network Card: Intel X520 for 10G connectivity
Rails: Sliding
PSU: Dual 1100 Watts
Remote Access: iDRAC Enterprise License

Questions:

Would this drive be compatible and how many disks max can this server accept? Is there a max TB disk capability too?

Samsung 970 EVO Plus or Inland Platinum 8TB NVMe SSD M.2 2280 PCIe Gen 3.0x4 

Ultimately, this is what I'm looking for:
- speediest SSD NVMe disks
- 32TB or 64TB of disk space
- no hw raid is fine, prefer performance over redundancy for virtualization platform
- mixed SATA 8 x 8TB SSD + 2 or 4 NVMe PCI based SSDs would be even better.

What would your recommended refurbished Dell server vendor be?

I've been looking between Orange Computers, Entera, SaveMyServer.