I've never built a PC before and I don't know that I know all of the considerations.

I'd like something as a server for automated backup from other devices, like phones. I may also do video reencoding on it. I'd like it to be fairly small, but it doesn't need to be that small. This is what I've picked out: https://pcpartpicker.com/list/L3pxGP.

The case, motherboard and power supply I plan to use is the AsRock Deskmini, but it wasn't an option on Part Picker: https://www.newegg.com/asrock-deskmini-x300w/p/N82E16856158068. This was attractive because it says it has a built-in RAID setup. This is for backups, so I'd like RAID, but I don't know anything RAID, so a built-in option sounded convenient. The Deskmeet would have been fine too, but it's out of stock.

Is the cooler OK for that processor? I don't care about a video card, and the 5700G has integrated graphics, but I don't know if I need something else to get the graphics working. Is there anything else I should consider?

Thanks for any help.