I am considering to buy this bag: http://www.ifactors.nl/tassen/tucano-work-out-bag-macbook-pro-15-inch.html . For my 15,4 MacBook Pro. I am going to use this for school. Will this bag be big enough to put my MacBook my mouse and my power adapter and my lunch? It is hard to see on Pictures how big this bag is. I am looking for a bag wich is slim and stil big enough to fit evrything in it for school. I hope someone could help me out. Thanks in advance.