Hello Yitzchok
And welcome to the NethServer Community!
Like Dan above, I also suggest using Proxmox. Both of us also use Proxmox in our home environment too, like a lot of the “good guys” on this forum!
I provide for SME clients, about 20-30. All running on Proxmox, NethServer running AD, File Print, Mail, Zabbix Monitoring and Nextcloud. I also build the Home Networks of a few friends.
This Home Network is running for a friend:
Proxmox is running on a HP Proliant Microserver G8 with 12 GB RAM, 2 mirrored WD Red Disks. These are only used for the OS, Storage is all done on the Synology NAS.
(16 GB RAM would be max, but my friend ordered a wrong brick or got a wrong one supplied by ebay and never got that solved out…).
Here, the firewall is, as is at almost all my clients, an OPNsense firewall, open and free as NethServer or Proxmox. Only, in this case, the firewall is virtualized inside Proxmox, meaning that must be running before I can reach the site externally. But this runs SO stable…
Proxmox, with live backups and snapshots can give a good peace of mind!
Note: I would suggest getting a box like the microserver with 8-16 GB RAM. They’re available eg on eBay for a reasonable price. And 5 years of use without headaches… 
Hope that helps!
My 2 cents
Andy