I have an Xfinity 1.2 gig plan and just upgraded my modem to an Arris S33 and get great speeds now on my wired connection but want to boost the WiFi signal. The main floor of my house is about 1800 sq. ft. and the basement is about 1200 sq. ft. but my router is in the basement under the stairs which is near the center of the house. It has to be there because the modem is there and that is where the cabling is for 3 wired ethernet ports throughout the house. I currently have an old Asus RT-AC68 router and would like to replace that. What are my options? Should I upgrade that router in the basement and put wireless access points on the main floor? I do have ethernet ports on the main floor at opposite ends of the house, which is about 75 feet long. Or is a mesh system better?