Hi! I got a MBA 13" 2012 with 256GB SSD and 4GB ram. I didn't custom order it and now a friend is about to order a 13" 128GB SSD 4GB from the Apple Store. I am now wondering if it would be a very bad idea to customize that one with 8GB ram: 13" 128GB 8GB and then when it arrive, take out the SSD in both computers and swap them so they are: 256 GB 8GB, and 128GB 4GB. I am not sure I will even notice the difference much since the SSD is already much faster than a traditional hard drive for virtual ram. Perhaps I should just stick with 4GB? I do some heavy work in Photoshop/Indesign etc so I would benefit from more ram. Anyone who have done such a switch or have any thoughts? Thanks!