So, I am moving an office to a new location and wanting to set them all up with n speeds (they want to wirelessly network, share drives, printers, etc). I want to do this with the new airport extreme. I have to set up a WDS because they don't want wires run and the office is big. So my question is: Do I need a couple more new airport extremes to keep the n speeds? Can I use a non-apple n repeater, or does that not work with airport? Also, are n cards cheap for desktops nowadays?