My Home configuration - Any concerns -before i install

I am considering getting a firewalla Gold Firewall and thought I would post to this group to get feedback before I order it and share my device configuration to see if anyone has concerns before I order

Here is the list of products I have / Use

Xfinity XFi 1 gigabit model acting as a router with DHCP

Orbi RBR850 Mesh wi-fi and Satellite in Bridge mode

Lorex 8 channel Seurity Camera

Ring Cameras

HomeBridge with the following plug ins

• Camera Ffmpeg Bridge
• GSH
• LG Thinq Bridge
• Midea Air Bridge
• Omnilink Platform Bridge
• Ring Bridge
• Wemo Bridge
• MyQ Bridge

NordVPN on Multiple devices

To ease installation, I would insert the router behind my Xfinity Router and keep my Xfinity as the router.  I am doing this as I have many IOT devices, and I really don’t want to reconfigure all the devices with new IP address on the network.  The firewall device would be in Bridge mode just like my Obi’s are.   I want to use my NordVPN client to set up a vpn client on the firewalla.   

HomeKit is my primary tool to access my lights and monitor windows and doors.  Do you have any concerns about this setup with Firewalla?