Give it a try. Raising money via Kickstarter will require you to generate some awareness and excitement around your project - being able to do so in a meaningful way could be proof to future investors (and more importantly yourself, too!) that you're actually able to not only build, but also market your product in an organic way.

As an aside, Kickstarter itself received quite some VC funding: http://allthingsd.com/20110317/kickstarter-fesses-up-the-cro...

EDIT: grammar