I want to be able to use Dreamweaver, Photoshop, Firework, and Illustrator with ease. Instead of spending over a thousand for an iMac, I can just upgrade my RAM, and attach an external monitor, and a portable hard drive to my 2010 13" MacBook Pro. I just learned that my MacBook can only go up from 4GB to 8GB. Should I be concerned that it might not be enough? What are the other options? Many thanks in advance.