Hi There I really want a rMBP for college in the fall and I'm wondering (in your opinion) would 256GB be enough for approximately four years. Do you think we will be able to upgrade these drives eventually? I mainly would be using my computer for Internet/Email, iWork (Plus other office suites), light gaming, and music (creating and downloading). My biggest concern is my music collection. It's at about 50GB but still growing. I know I can use an external HDD but I'm looking for other opinions. Thanks in advance for your help!