Good Analysis of self-publishing vs. traditional publishing
There's a lot to read here, but if you're set on self-publishing, it's worth the time to read all the way through and check out some of the links. It's noteworthy that the article cautions against the "self-publishing" imprints connected (however slightly) to traditional imprints like Simon & Schuster. Writer Beware! http://www.sfwa.org/other-resources/for-authors/writer-beware/pod/