What are you using for the 2.5G backbone to feed the AP's in this setup?
For the moment I've got a 2.5G POE switch on the U7 Pro and still using a 1G POE injector for the U6 lite, but I've got a 2.5G injector inbound that should be here before the second U7 Pro arrives.
Ideally, I'd want a Ubiquiti 2.5G POE switch, but there's no way I can justify $650 for their current Enterprise 8 PoE. With any luck they'll bring out a pro-sumer grade 2.5G PoE for sub $200.
a second? what is the use case you need a second router?
It's a second AP that will replace an existing U6 Lite