Leaving the patina
Sure... what's your credit card # lol
Learn how to do it yourself. Every car i built since i was 15 i bodyworked and sprayed myself. This was done out of necessity. "Patina" wasnt a thing in the 1980s. They called it the beat to **** look. At 15 my 68 charger needed everything, and paint. Being bucks down i rolled up my sleeves and got to work learning how to remove dents and fix rust holes. No internet back then, i had to scrounge book stores for information, and ask older body shop people for advice. Sure the first try wasnt great, but it was pretty decent, but over time my bodywork skills and paint skills got better.
I dont spray metallics only solid colors. This way if you have to, you can get a gallon of basecoat and shoot the car a piece at a time, as long as you mix the paint thoroughly every time and take it from that gallon it will match. Doing it this way you have more control over dust issues in the shop where your spraying. Use a big exhaust fan to pull the fumes outside while spraying too, otherwise the particulate in the air will settle on the flat surfaces as they dry.
Typically i will use single stage enamel for door jambs, engine compartments, trunk areas etc, and base/clear for exterior. Granted bodywork and paint isnt everybodies cup o tea, however doing it myself saves me money thats better spent on other aspects of my project. Lots of how to books out there on this subject. Why not start with a junk fender or door to practice on. I bet some of you got hidden talent you dont even know you had.
So in closing i'd say give me your credit card number, and let me repaint it for you, however with 4 kids and no time to myself it may be a few years before i can even squirt color on my 67 notch. Talk about self imposed bodyshop purgatory.