Hi! I would like to buy a MacBook Retina for working when I travel, but in the office I currently connect my notebook with: 1 x USB keyboard 1 x USB mouse 1 x VGA connector to external display. I cannot afford 4K screens so VGA or DVI stays. My keyboard i sthe most important because it's full sized and comfortable for a day's work, and I can touch type on this. I would like to keep this. How could I do this with a MB Retina? Kind regards, Sophie.