I am currently using a 4th generation Airport Extreme. A friend is giving me his old Airport Time Capsule (3rd Gen). How easy/difficult would it be to: 1 - Just plug the Time Capsule to the Airport Extreme (via cable) and simply use it as a Time Machine backup. 2 - Or instead, put the Time Capsule into another room and use it both as an network extender AND Time Machine Backup. Thank you!