I had 2 gr10’s wired initially
i installed 2 gr 12’s wired and moved the 2 gr10’s out to the perimeter as meshed repeaters.
Two networks are being broadcasted, 1 for low speed utility devices such as cameras, printers, air conditioners, door bells, etc, and the other for high speed use such as laptops, cell phones, midea streaming, etc.
you can run network topography to confirm the APs are running the way you planned.
also, there seems to be some tweaking with orientation interns of how they face horizontally or vertically and what is in line of sight to the AP’s.
It sure what the optimal arrangement is just letting you know what I did.