How much paint?

I'm learning as I go.BUT.. I've epoxy primered the whole car inside and out,that took 5/8 of a gallon. Then I stated body work and sufacing primer I'm on the second gallon and I'll use most of it as I've only got to coat everything once more. Its a process: sand repair prime sand prime repair sand prime sand sand prime ............. I figure after the next coat then I'll thin down the epoxy to use as a sealer spray it and then the color. But i'm only learning. SO: 1 gallon epoxy primer,2 gallons surfaceing primer, lots of sandpaper, lots of time.Then the color.

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