Can someone help with where to get a custom PC?

Hi y’all

I need a new desktop PC for my astrophotography. I have some specific requirements and I haven’t been able to find a company to meet exactly what I’m looking for. Cyberpower PC has it but they’ve not responded to emails or chats.

Anyway, what I’m looking for is a 10th or 11th gen i9 K series chip, at least 32 gb RAM. 1 TB SSD with 8TB backup HDD. Dual video card that can handle two 4K monitors.

Here is the system requirements
https://pixinsight.com/sysreq/index.html

Anyway, having trouble finding all that in one, except at CyberpowerPC and they’re not responding to emails. Can someone help?