Virgin Media Hub 5 (rebranded Arris) 2.5Gbps LAN port, Firewalls Gold Plus, Google Nest WiFi Pro???

My ISP has just upgraded my modem to support Gbps connectivity which now includes a single 2.5Gbps LAN port. I was also looking at upgrading my UniFi AP's/switches and ASUS AC88U router to a firewalla gold plus and Google Nest WiFi Pro 3+ pucks. I'm now unsure what direction to go because of the limited compatibility with firewalla and Google Nest WiFi - I was looking at moving away from unifi to simplify the environment so my other half might have some chance of understanding it. Any thoughts appreciated, looks like nest WiFi Pro still only supports a single unit in bridge mode.