black mac mini

Even though its not a mac mini and will be running a linux os Unraid, the name was inspired by a video I saw about how to cluster mac minis to beef up your local LLM capabilities. After a bit more research, I came to the realization that I could just get an M4 Pro Mac Mini and use that as a node that I can access from my Macbook. Looking at the pricetag... woof! $1500. So I set out on trying to build my own from parts that I either already had, got for free from work, or bought used on ebay. Here is a list of stuff so far:

Processor ryzen 9 processor facebook marketplace $200
DDR5 RAM ebay
GPU amazon
PCIe SATAIII card ebay
cables amazon
6 drive ssd bay amazon
6 ssd hard drives
various power cables free from work $0
NVME ssd amazon
PCIe NVME ssd card aliexpress
Power supply free from work $0
Case free from work $0
Fans free from work $0
Motherboard ebay
CPU Heatsink free from work $0
Unraid Licnese $119
Unraid USB Stick
12TB RAID Drives (3x) amazon

how am i going to retro fit the front?