Hello, I have a Tp-Link AC1750 wireless dual gigabit router and recently bought the Deco M3 system (Deco M4R + 2 Deco M3W) for better coverage at a 3-floor house. What would you recommend to have the

Hi, I plan on connecting one of the Deco M9 Plus to the TPLink AC1750 (router) in AP mode. Then have the 2nd Deco M9 Plus connect to the 1st Deco M9 Plus in wifi backhaul. If I set the SSID to the AC1