With the additional nvme drives, PCIe card (assuming 10GB or 2.5GB NIC), how are you fitting the boot SSD via the SATA flex cable? Do you have any more pics on how you have it all fitting?
I have a Lenovo P330 Tiny I am considering doing this mod on - awesome project! If this works it will solve so many home lab problems for me!
My P330 has a large black heatsink plate under the PCIe card / SSD position: