I was looking at the Netgate 2100 and even thought it only shows a single WAN port on the back would I be able to configure one of the LAN ports to a WAN Port. I’m guessing yes because of the flexibility of pfsense software.
Yes, you can Netgate 2100 Security Gateway Manual | Netgate Documentation
As these devices has switched ports you have to change the vlan settings to create another wan port - all info in link above
If you want separate network ports, you have to go to 4100