I have a whole ubiquiti network and love it. Though I’m anxiously awaiting their upgrade to the USG pro/4p, which I’m hoping is over the next few months. The below are in a networking rack. I have 2 AP HDs( not the nano ones) 3x 8-POE-60s 1x 16-POE-150 1 cloud key Gen 2 plus 1 USG Pro/4p I have moved my aunt(mostly because of circumstance and not need) and my cousin over as well. Although they have different hardware to suit their networks. I manage all three from the cloud key very easily. I have ATT’s symmetrical gig service and felt that the AP pros didn’t adequately handle it. Went to the AP HDs(or “UAP-AC-HD” depending on where you look and the difference was very noticeable on my iPhone 7 Plus.) I also noticed a difference between the 3p router you listed, and the 4p. Don’t order any of the hardware on amazon. Go through an authorized reseller, or go through them(though their return policy isn’t the best). I personally mostly use BH-photo for everything UniFi. Also, I’d make sure you’re access points can be powered by the switches.