Thanks a ton for the input. I actually found two Seagate 14TB external drives for $130 off at Best Buy that I'll shuck. I grabbed those because they sounded like a good deal and can replace the five media drives that I have for the Plex Server and the two for the Security Camera Z-Book. I have two RAIDed NVME drives in the Synology that run all of the docker containers so the four drives in the NAS only run a couple times a day for backups of a couple PCs. I'd prefer to keep that for the time being as I don't plan to RAID the two 14TB drives as it would just be media for Plex and the security camera footage so if one fails, it fails.
I found an N100 4-Port 2.5Gig box that as you mentioned I think will run PfSense, HA and Pihole, so that will remove the 50-watt i3 router I'm using now.
I like the idea of an i3-13100 based system. Do you have any suggestions for other components? Mobo, Power Supply etc.? The last PCs I built were in 2007 and 2014 so it has been a while.
Thanks. That'd be great.