As for the success of it, I don't know. The things i like are never really that popular. -superboyac
I hear you. I'm one of the people that actually liked
Islandia.

We are going to go all out on it, but success is such a tricky thing, and the things we like don't normally fall into the successful/popular category. At best, they are acclaimed critically.
If you have a story that you really
need to tell, you have a genuine crack at success. That's one characteristic of most successful works of fiction. The author(s) wrote the story they wanted to read, rather than the one they thought would sell.
re: help wantedHere's a suggestion. Consider a
quasi-viral approach. Think
Firefly. Think
StarTrek.
Do a project website. Explain what it's about. Show people some of what you have so far. Try publishing the first two or three chapters up on the web. Invite interested parties to participate in whatever capacity, and under whatever terms seem most acceptable to your creative team. And be blunt about what you're seeking. If you're looking for final art (and only final art) just say so. And if money is going to be an issue (or non-existent), also make that very plain from the get-go.
FWIW: I've got a buddy who's a very talented comic book writer. He's been involved in several collaborative projects. And to date, only a few of them ever panned out. The problem is that most people (especially the bedroom art crowd) underestimate the amount of work involved in getting a graphic novel out the door. From his (and my) experiences, I'd say about 95% of the people who contact you will never come through on what they promise. Most of the remaining 5% will also fizzle out on you after a few weeks. And this sad statistic has held true whether or not there was money to be had.
Sill, if you're lucky, you just might hook up with somebody that actually brings something to the party.
Think of it this way - suppose your book really takes off and they decide to have Burton or Speilberg make it into a movie. Suddenly you'll find you have hundreds of people collaborating to bring your epic to the screen. Might not hurt to get a little practice in first.
I'd hold off on doing any of this right now. But tuck it in the back of your head for later.
P.S. Thanks for the compliment, but I'm definitely not an artist. We have a real one in my family - so I know.