My girlfriend is buying herself a new 13" Retina MBP very soon. I'm helping her decide which model to go for. I've already decided for the model with 256GB and 8GB RAM, but I'm not sure whether or not to upgrade it to 16GB of RAM. She mostly use the machine for kind of heavy Word Processing and her 2009 MacBook no longer does the job. As she's studying a masters degree in petroleum geosciences there are A LOT of pictures involved when handing in documents. Besides school she does some not heavy image editing, surf on the web and watch movies. My question is, will these 8GB of RAM be worth it in the long run? Will the machine be adequate for her for a longer time if upgrading to 16GB of RAM or will it not be necessary for her use?