I am a total noob at this and I think that I have it planned out ok, but I wanted some reassurance or critique. I have an Arris S33 that has a 2.5Gb port and a 1Gb port (2.5Gb max) and I thought that it would be good to use both of them.

The 1Gb port for IoT (behind a openWRT router) and the 2.5Gb port for everything else (behind an OPNsense firewall). I already have a firewall device and a couple of routers laying around.

What do you think? Here is a diagram that I made in mspaint.

EDIT: I also have two Kodi boxes that needs to access the WAN for IPTV and also access the TrueNAS server to play local files. However I didn’t want to put it on the same VLAN as the TrueNAS server for security reasons. Should I put them together on a dumb switch and make a VLAN just for them off the firewall?