Multiple IPs on WAN with different gateways
I requested 2 new IPs from my ISP, and the IPs they assigned me are on a completely different subnet (and a different gateway) than the IP we had originally (original IP 89.212.x.x, new IPs 93.103.x.x). Now I'm not sure how to assign these new IPs to pfSense. They aren't routed - I connected another computer to the WAN switch, set one of the IPs, and it worked.
Is your WAN switch managable? If so you could setup a couple vlans on your WAN NIC, and proceed to setup the switch to handle the "multiple" type of setup.