Enhancing my Apple wi-fi network
I'm looking to upgrade my Wi-Fi network to get better speeds in areas of my house that aren't hard wired for Ethernet. I currently have a older (5 yrs old?) Time Capsule as my main access point and 3 airport express "extending" my network. Does the older Time Capsule use AC? Can the Airport Extreme be used as an extender like the express? Will having a Time Capsule that is AC capable along with 2-3 Extremes as extenders improve my current performance?