my sis got this really humongous bag for college that would definitely fit that. idk she got it at the outlet but it was fabric signature and it was a huge tote and on sale for a little less than $300 .. are u near an outlet?
This might sound silly, but must it be coach? If not, do visit lexiebarnes.com I got a perfect laptop bag, but I realize that her designs will not appeal to everyone. I have a mac & it's such a perfect fit--good luck!