I’m about to switch to FTTH 1gb up and down. I have an old rt-ac68u in my basement that does cover the house up to the 2nd floor I’m trying to improve coverage and speed for the WiFi.

I want to keep the main router downstairs since I need ethernet connection to my PC for gaming.

Should I buy the AX86UPRO? It’s currently on black Friday special at 259$ CAD. If I do should I use after my old router as a WiFi Mesh network?