Adding to this, I’m assuming the PSU is around 1000watts, and there’s two of them. Operating a power supply at lower loads reduces the efficiency, having two would decrease the load more, making them less efficient. That missing 40 watts is 20 watts per PSU, which seems acceptable.

Each room has a 4 button Hue Zigbee button: Ceiling lights on/off, brightness up, brightness down, then the Hue button turns on/off bedside lights, floor lamps etc.

The three iPads are all in different places: main entrance way/downstairs hallway, top of the stairs/upstairs hallway, in the walk in closet of the master bedroom.

Each iPad has a default screen with the lights in the area around it, while also able to change to other views in HA so control heating, robot vacuums etc.

We have 3 of them, mounted to the wall, for home automation stuff. Each room has a Zigbee button at the doorway etc, and then an iPad in the hallways etc for more fine control via Home Assistant.