AWebster: thanks for your reply.. the reason wan is currently on em3 is because this hardware and platform will be moved to a data centre at some point soon, and em0 will be WAN… im just waiting for the IP details from our network provider until everything is confirmed.
I configured the nic's in pfsense as per cmd line which was in the screen shot i attached to my original post.
regarding vlans, my proxMox presents the tagged vlan ports straight into the kvm guest which pfsense is running on by way of each of the nics, em0-3. I didn't see any reason to bring the vlan's straight into pfsense.
Doktornotor : This 'PEBAK' you speak of - is possible because the 'physical switch' we're actually using to plug the two physical hypervisor servers (proxmox) only turned up this morning and I was trying to do as much 'config' on what I currently had available...
thanks tho.. will update asap