Ok right now I have a western digital 1tb my book connected to my iMac. I just bought a MacBook pro and we own 2 iPads between my wife and son. I was thinking of a time capsule but could I just use a airport extrem and connect my current external to it and wirelessly sync my computers. Also could I access movies via iPad through it when connected by wifi when we are away from home. I'm sorry for such rookie questions.