My girlfriend is looking to buy a new laptop, and thinking of buying an Air. There's currently a promotion going on at a local electronics store with a 20% discount, which is huge for Apple products, but there's a catch: they can't be built to order. That means it would be the stock 4 GB version, in either 128 GB or 256 GB. Our question is: will 4 GB be enough for the next 2-3 years, considering the laptop will be mainly used for chrome, mail, IM, and watching movies with VLC? Also: We're thinking of getting the 128 GB version, since the SSD (unlike the RAM) is upgradeable. Does anyone have experience with upgrading the SSD in a 2014 MB Air?