Hello everyone. Very soon i will become a user of a mac book pro, but i am wondering which customization's i should get. I've pretty much concluded that the 8gb is not needed because i simple watch videos, use word processors, don't play games, make power points/presentations. However i do have a ton of videos mainly mp4s....currently i have a external hard drive but i would like to have my files backed up in atleast two places, one being on the external hard drive and the other on my computer. So my question is shall i get the 750 gb upgrade from apple or is it easier just to buy that separate and install it? Also i'm new to apple so if you know of any good tutorial videos please let me know. Thanks.