Personally, I would not bother bridging multiple ethernet ports on my pfSense just to get a few ports in the same LAN subnet. You will probably end up with more LAN devices to connect (WiFi access point, NAS, cabled computers…) than you have ports in your pfSense box anyway, and will have to have a switch anyhow. It is easiest to connect a switch to the single LAN port on the pfSense, and connect everything else to the switch.
Then further down the track, if you want to have a separate guest network etc, you can easily use a spare ethernet port on your pfSense to make a separate subnet for guests and so on.
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