I'll apologize for my opinion beforehand.
With all of the labor you are going to put into a paint job, I believe you can only save a little money on "cheaper" paints. PPG makes a really nice single stage product that covers good and looks great. Material costs are rediculous, but your labor is worth alot! The better quality material applies easier and looks better longer than the cheaper paints. I'm putting Spies Hecker on my ride because of all of the labor i'm putting into it. The basecoat/clearcoat i'm using costs alot, but the paint is high quality and the clear blocks the U.V. so the color stays put. Whatever you use, make sure it's a brand name product, and you won't be sorry. Paint packaged by someone who doesn't have a paint factory probably isn't as good as a main-line company. You get what you pay for unfortunately. I used to shoot Centari back in 1972 and it was a good single stage product, but that was then. Do your homework and you'll be O.K. Good luck, and post some pic's after it's done. We wanna see it!