Hello, I am considering purchasing a 13" rMBP and wanted to get opinions on which configuration is sufficient for use with Adobe CS6 (primarily InDesign, Illustrator and Photoshop)? When using these programs I would connect to my Thunderbolt Display. I think 8gb is plenty for these apps but wondering if I should upgrade to 16gb or instead bump up the processor to 2.9 or 3.1GHz? Or is not necessary to upgrade either of these options on the base 256gb model for my intended use? Thanks in advance!