Our Cuda was painted for about $2000 ($1500 labor and $500 materials), but it was single stage and I painted the door jambs, trunk, and engine compartment. I also had to do some color sanding and polishing on it where I wasn't satisfied. I would recommend going to some local car shows and asking everyone there about painters in the area. You're sure to get some leads. For the purple paint, it's obviously going to be a two-stage job.
On a different subject, if someone suggests Sherwin-Williams FC7 Plum Crazy paint, don't laugh. It's excellent paint and the color is dead on. On the other hand, Dupont's idea of FC7 is too silvery and just doesn't pop like the Sherwin-Williams. I've heard good things about the PPG FC7 and I'm sure I've seen it, but don't dismiss the Sherwin-Williams offhand.