I'm not a remixer (yet), but I've been around long enough to know how this works, and I'll do my best to let you down more gently than perhaps others will.
People are not going to hop on board a project unless it's with someone they know and trust. The reasons for this are manifold: they need to know they'll work well together, that the person in charge can keep track of various deadlines, that the person has good judgment of what is acceptable(since s/he is in charge of whether tracks are adequate), that the person knows when to boot a remixer if they're dragging their feet, etc. I guess you can consider working up to your first project a sort of rite of passage, and the best way to indicate your ability there is proboably to comment in the Works in Progress (WIP) forums (so people know your skill at critiquing musical arrangement and production) and to make friends with the bigger names around this site (who can consistently churn out solid mixes that will make the project awesome).
As always, this is neither a personal shot against you nor the idea of your project, but you have to be very, very aware of what you're getting yourself into. If it makes you feel any better, I've been here for a year and a half and I probably couldn't direct a project (not even for time reasons, simply because I'm not established enough on the music side of things).