I have a long bed single cab. Wanting to repaint it a similar light metallic blue color. The cab and bed will be metallic blue but the fenders and hood would be primered white. Would 1 gallon of paint and clearcoat be enough. Im assuming with the added reducer it would be a gallon and a half of paint. Should i put 3 coats of clear on to make it easier to buff and extra paint protection? Im going to be spraying out of a 15 dollar harbor freight gun.