Anyone who's into building NAS server?

I’m going to try to build one tomorrow. Though unraid seems interesting and user friendly, I’ll be starting out with mergerfs and snapraid in vanilla Debian. Have got a 3.2TB enterprise SSD, so I want to try tiered caching too.

A lot of people swear by unraid. But I wanted to try configuration via ansible too, so will probably go the mergerfs+snapraid route.
I’ve used mergerfs for around 3 years in the form of a VM that just handles storage and shares the data with other VM/containers/computers via Samba.

Hardware I’m planning to use:
i7 8700
32 GB crucial ballistix RAM
MSI Z390 gaming plus
Samsung Oracle F320 for SSD storage
2 x 8 GB, 3 x 2 TB SATA hard drives for storage,
And Kingston SSD Now E100 for boot drive.