hi, i am a highschool sophmore looking for my first apple laptop. i already have an hp pavilion g4 that i intend on keeping. at first i wanted a macbook pro but im only 16 and unloading 1400 on one is just not something i want to do. i am wondering if the 11.6 inch mac air is enough. all i usually do is use internet, facebook, and some other minor computing, no im not a power user by any means! so im wondering if the smallest air will be enough for me. also i want to use it for collage in 2 years. also what is the average life span on these laptops? thank you.;D