Originally Posted by
prae
IMO there is such a thing as too many WAPs. I am running a NanoHD on a main floor of a 50s bungalow (1400sqft), and an AC in-wall in the basement, and I had trouble with the RSSI of both APs in the 5GHz band being so close to each other that clients would try to jump between the two and you'd just end up ranging/DHCPing constantly. Pain in the ass.
Maybe the answer was more WAPs, on the other hand... hmmm.
The fix for me was turning the in-wall's power way down which improved quality of experience throughout the house. I would plan for at least an AP per floor. Plus one on the awesomeness of in-walls. I'd just opt for hard line points in areas you suspect you might end up with dead spots, and add in-walls after-the-fact if indeed you find it's a problem.
don't forget a hardline to your garage. I moved my old AC-PRO to the garage to ensure my cameras and IoT stuff had sufficient wifi signal.