Currently I have a newer airport extreme base station in my basement connected to a cable modem. I have a new Airport Express on order. What I want to do is move the AEBS to the 2nd floor and connect it directly to my Imac so I can do quicker error free backups. The Airport express will now reside in the basement and replace the AEBS. The AE will be connected to the cable modem and become the primary "hub". Am I creating any new problems in doing so? Will I have to redo my setup using Airport utility? Will I lose any speed making the AE the first entry point in my network or should I leave everything alone and simply leave the setup as is and make the AE the extender? I am unable to run a CAT5 cable to my 2nd floor and cannot get a proper time capsule backup without errors over WIFI. Also having the express and AEBS will hopefully improve weak spots in my home. Connecting the AEBS to the iMac will fix the backup issues if the above solution is viable?