I too went down this road. Everything bar the Modem is Unifi in my home network now. The central management is very convenient, but if you want to hear about grievances, I got two for you to choose from. First, IPv6 support is needlessly limited. You can have Prefix Delegation or advertise a ULA network, but not both at the same time. No idea why. This seems very easy to implement. Second, the local dynamic DNS (i.e. advertising the IPs of your local clients) works sometimes, but not all the time. You can mitigate this one by using .local as your domain ‘though, in which case you fall back on MDNS in case the Unifi DNS fails.
I too went down this road. Everything bar the Modem is Unifi in my home network now. The central management is very convenient, but if you want to hear about grievances, I got two for you to choose from. First, IPv6 support is needlessly limited. You can have Prefix Delegation or advertise a ULA network, but not both at the same time. No idea why. This seems very easy to implement. Second, the local dynamic DNS (i.e. advertising the IPs of your local clients) works sometimes, but not all the time. You can mitigate this one by using .local as your domain ‘though, in which case you fall back on MDNS in case the Unifi DNS fails.