Cost of Paint and Bodywork?!

All depends on what in a restored car and how much you want to invest. There are two types of show cars, one is how it came from the factory and the other is like yours, awesome and over restored. I see people spend big bucks to have their cars restored with all number matching, original parts and then paint their cars with a base and clear coat. I just don't get it. A build as you like car, YES. Nice 68!!!!!
"how it came from the factory" with early Fords was a lacquer applied by brush. It was some sort of nitro chemical, perhaps a bit like nitrocellulose (gunpowder). Paint chemistry and application has changed a lot. New cars mostly have bodies dipped in primer and sprayed with $100K rotary sprayers using electrostatic charge to move the fine mist to the car body and reproducible robot-arm controls. It comes out so smooth they don't even buff, other than in small spots, which a computer imaging system flags for the workers.