Hi, I'm looking to buy a wireless router for my house to get rid of all the wires. I came upon the AirPort Express which was within the price range I wanted it. However my question is how far will it reach? My house is about 25meters (80ft) in legnth and 20 meters (65ft) wide. Will one AirPort Express be enough to provide wireless for most of my house? Oh it's also on the 31st floor if that makes any difference.. And I own a macbook air so I dont think my laptop would be much of a problem. Thanks a lot for your help!