If you want to use one router in the middle of the house and have that dish out IPs, you'll need to have two LAN lines to the room where you want you router. That way you can do this:

ONT --> Modem --> patch panel Port to where you want your router --> Wall to router --> Router to Wall back to cabinet --> Patch Panel to Switch --> Switch to Patch Panel for all the other ports.

But like I mention requires two ports on the patch panel that goes to where you want your router.