If you want to spend some money and aren't afraid to get into a bit of technical stuff, you could pick up a Mikrotik RB750 GR3 Hex, or a HAP AC2 if you need wifi on it, use that as your main router (I'm sure it'd fit in that little space, it's pretty damn small), and patch everything from that. You could even buy one of the Mikrotik passive PoE adapters to power it if you couldn't fit the plug into the space provided.