Ken, I think you're on the right track holding out for the right price. Some dealers just don't get it. They can't make money on every car, and your price is totally reasonable seeing that the '06s are already hitting dealerships.
My wife needed some convincing too, but not much. Once she saw the GTO in person she said, "You absolutely have to have this car!"
Oh, and FYI - Yellow Jacket is no longer produced and much more rare than red or black. It doesn't show swirls like other colors, and it IS the fastest color.