I need a laptop for my design school which means I have to work with adobe tools mostly. What I already have at home is a Macbook pro early 2011 with 320gb HDD, 4gb ram and hd3000. Right now my plan is to either upgrade the old machine with 8gb ram, a ssd in the CD drive bay OR I invest in a Macbook air base model ( that's the only one available in India ) because portability is also a concern for me, the old macbook is slightly on the heavy side. Anyway what do you guys think I should. Should I look up for option in windows as well ? my budget is 999$ Max.