I can't help but notice that for someone with a claim to being visionary on your website, all of your present heroes are male, most of which have rinse-and-repeat stories, thus perpetuating the stale and male-dominated genre. It is entirely possible for a female hero to be depicted in a away that is not overtly seductive. Therefore, for the promises your comic makes, I'd like to see something a little more widely-encompassing.
That aside, you treat this as though this is an opportunity for the artists to be paid such low rates. It's a starter project, and there is no guarantee that this will work. I do hope you find someone who can work consistently and shares your vision, but for the amount of hours that will go into each page, $2 an hour just isn't cutting it unless they feel this company is their life work and don't have to pay any bills.