Looking for HW recommendations for DIY NAS/Homelab

Here's what I currently have:

• Ryzen 1700 w/ 16GB RAM
• GTX 750 ti
• 1x SATA SSD - 120GB, currently use <50GB
• 2x 8TB SATA HDD
• runs openSUSE Leap, considering switch to microOS

And main services I run (total disk usage for OS+services - data is :

• NextCloud - possibly switch to ownCloud infinite scale
• Jellyfin - transcoding is nice to have, but not required
• samba
• various small services (Unifi Controller, vaultwarden, etc)

And services I plan to run:

• CI/CD for Rust projects - infrequent builds
• HomeAssistant
• maybe speech to text? I'm looking to build an Alexa replacement
• Minecraft server - small scale, only like 2-3 players, very few mods

HW wishlist:

• 16GB RAM - 8GB may be a little low longer term
• 4x SATA - may add 2 more HDDs
• m.2 - replace my SATA SSD; ideally 2x for RAID, but I can do backups; performance isn't the concern here (1x sata + PCIe would work)
• dual NIC - not required, but would simplify router config for private network; could use USB to Eth dongle, this is just for security cameras and whatnot
• very small - mini-ITX at the largest; I want to shove this under my bed
• very quiet
• very low power - my Ryzen 1700 is overkill, this is mostly for the "quiet" req, but also paying less is nice

I've heard good things about N100 devices, but I haven't seen anything w/ 4x SATA or an accessible PCIe for a SATA adapter.

The closest I've seen is a ZimaBlade, but I'm worried about:

• performance, especially as a CI server
• power supply - why couldn't they just do regular USB-C?
• access to extra USB ports - its hidden in the case

I don't need x86 for anything, ARM would be fine, but I'm having trouble finding anything with >8GB RAM and SATA/PCIe options are a bit... limited.

Anyway, thoughts?