Can the Mac Mini support 5 SATA drives after some modifications?

Hello!

I have two old PCs and one of them is a MacMini Late 2014 edition (without the SSD). I am trying to start a project to build a home server. I am not a pro here so if there are any critical steps missing let me know, but here is my plan:

1. Install the SSD Flex Cable Adapter along with a NGFF M.2 NVMe SSD Adapter. Both of those products should be compatible according to my research.
2. Attach a NVMe to 5 Port SATA Adapter to the new M.2 slot.
3. Do some DIY enclosure modifications...I'll probably just drill a hole in it for the cables or something.
4. Power the drives with an external power supply.
5. Flash and run TrueNAS on the MacMini

I'm just unsure if the MacMini will recognize the 5 dives connected to that SATA adapter. I'm also unsure of how big of a bottleneck all of those adapters chained together will be in terms of speed if it can recognize all 5 drives.

If anyone can shed some light on this idea for me I would greatly appreciate it.

Thanks!