Hello! For some background info, I will be sharing a suite-style dorm this year with three other people. Three of us already have Macs, and are looking into getting an Airport Extreme for the dorm, as the building is not wireless-ready. If we were to connect three external hard drives and a printer to a powered USB hub and into the USB port on the Airport Extreme, would we be able to each automatically back up to our respective external hard drives via Time Machine upon connecting to the network? Also, would we see a significant drop in speed while backing up, considering that we will all be using the 802.11ac protocol? Thanks!