My existing network consists of the Airport Extreme Base Station 802.11n with an 802.11n Airport Express, 802.11g Airport Extreme, and 802.11g Airport Express being used to extend the network. I thought it was a good idea but I am reading that it may not be because since my Wifi may be downgraded to 802.11g across the board. Is that true? I am also considering using the newest Time Capsule but I always suffer from buyers remorse so I have not opened the box yet. With that being said if I do use the 802.11ac Time Capsule should I not use the 802.11n Airport Extreme and Express to extent the network? Also should I try to hold out for 802.11ad or 802.11ae?