Hello! I recently bought a new 13" MacBook Air as a primary laptop. It is the base 13" model with a 128GB SSD and 4GB of RAM. It is excellent, however I feel that I will run out of space quite quickly. I have thought about an external drive, but that is a large investment at the moment and I am conflicted about whether I need it or not. I have only had the Air for a week, and I have already wiped the drive and started over on it once (That screwed up my launchpad, as I liked having the included apps in the right places). Can someone help me make this treacherous decision? PS- if anyone knows how to make your launchpad look exactly like it would when you take the machine out of the box, please tell me.