Hi, as the title suggests, I'm currently facing a dilemma in which I can only try to afford the base model Retina MBP which comes with a mere 256 gb of flash storage, which quite frankly isn't enough for me. Am I right in believing that it would not be possible to add a standard optical hard drive to supplement the 256gb already installed on the MBP? This is a real deal breaker, and I guess others will also be put off buying the new Retina MBP for similar reasons. I don't need a higher processor speed, but do need the extra storage and don't feel happy in being forced to cough up an extra £400 for the privilege of wanting a 'normal' amount of storage space. Anyone have any suggestions? Would appreciate any advice. Thanks.