We are thinking about getting an ipad air (partly so our kids can stay in touch with their friends independently of us). The air comes with either 64 or 256gb of storage. As Ive said, we have never owned one before, so I am wondering how much we realistically need - particularly in terms of space for apps. This would be a family ipad, so everyone may want to install a few apps (including games) of their own on it. We will also probably get the keyboard, so will install things like office on it. I have seen that their are external storage options like the Sandisk Ixpand flash drives, but am I right in thinking that is only for media? So you you need to get the space for apps right at the start.