@hpa_support Better to use two managed L2 switches with VLANs. Then you only need 2 switches for as many VLANs as you need.
A basic setup is something like:
2 x pfsense devices (i.e. CARP MASTER and BACKUP)
2 x Managed L2 switches
Plan VLANs and configure on pfSense, i.e.
VLAN 10 - WAN1 (provider 1)
VLAN 11 - WAN2 (provider 2)
VLAN 20 - LAN
VLAN 30 - Phones
Run 1 cable from each of the pfsense device to each switch (2 cables leaving each pfsense device, 4 cables in total). Configure as trunk ports on the switch so pfSense can pass traffic for any VLAN. Cross connect the two pfsense devices on another network port to handle pfsync.
Now configure VLANs on pfSense on those interfaces, pfsync on the cross-connected port, you can have as many VLANs as you need (WAN, LAN, DMZ, phone, etc) without extra switches or cables now.
You will want to cross-connect (or stack) the L2 switches between each other (configure as trunk ports) so they can pass the CARP heartbeat as well as any other VLAN traffic across switches. Consider enabling spanning tree on the switches to save yourself some frustration if you accidentally create a loop.