Noob home server hardware questions, what must be changed?

[keha]

I have a computer that I intend to convert into a home server running TrueNAS Scale. But I want to know if there is something I should change in the hardware setup before I proceed, from what I've found in the forum before posting it seems like the non-ECC ram has to go, the motherboard and the CPU both support ECC from what I can understand, please correct me if I'm wrong. The motherboard also have Realtek networking, which seems to be bad and frowned upon in the forum (based on forum search), should I buy a PCIe network adapter? I also don't have a graphics card for it, any recommendations for a cheap option, only used for installation or troubleshooting I guess? It will primarily function as a file backup server for photos and videos (I'm a photographer).

This is my leftover computer:

Motherboard: Gigabyte B550M AORUS Elite
CPU: AMD Ryzen 5 5600X 3.7 GHz 35MB
RAM: 32Gb 3200 Mhz Non-ECC
Drives: 2x m.2 nvme SSD (two different brands, same size)
Storage: Also intend to buy 2 NAS HDDs and put in a vdev mirror