A homelab is whatever you use to tinker and try things out A homeserver is whatever you use for stable workloads
Both can coexist at the time
Next level is a home datacenter, and that's where you have a 24 U rack or something that shouldn't fit in an apartment You have a homedatacenter!
I'm if you can post more about the hardware software and network config really curious about your setup, it looks well thought
You should take a look a this website below
If you're coming from pfsense, opnsense will be your best alternative
Lots of good articles to begin with opnsense : https://homenetworkguy.com/tags/opnsense/