I think Kickstarter is definitely the right way to go with this. I am one of those people that travel with my laptop, ipad, kindle, etc. and would probably be interested in purchasing a bag like this if the final product looks nice.
As for Kickstarter, do a lot of research on what kind of campaigns are successful. I listened to an interesting Mixergy podcast with the guys the made the Coffee Joulies (http://www.kickstarter.com/projects/...fee-just-right
). They talked about what kind of research they did to create a successful Kickstarter campaign.
Another thing that's been really popular on Kickstarter lately is made in America items. If you can figure out a way to get your product manufactured in America for a decent price then it will definitely help your campaign.
Good luck and keep us updated.