next one will be 192.168.1.4 and so on, the answer to your Q is yes you are right

The setup I am testing internally do not test performance in a room, just set the them, 5210 radios are ment for outdoor, leave a full power and as far apart as room lets you, you will find how to...

With 7210 as Client no way Operation Mode as Client Router yes. but in your scenario useless cause your drawing is on the roof connect any TL router by lan cable from 7210 to a 740 router converted...

No bridge mode No WPA or WEP Use WPA/WPA2 PERSONAL it's defaults

Im going to asume building A that has the Archer where is the internet provider (ISP) 1-as told before reset your 2-7210s to factory default 2-Quick Set up,next window Operation Mod ,select third row...

start by resetting your 2-7210s http://www.tp-link.com/en/article/?faqid=202 assign different IPs to both of them they have to be out of your DHCP scope, this IPs have to be in the subnet of your...