Plastikote is best sprayed out of the Can . Duplicolor has a line of automotive paints in quart cans, they have a ready mixed primer that isn't too pricey at about $25.00 a quart. if you want Hobby type of primers there are a lot of acrylic brands of airbrush ready primers. or you could go to a paint store and let them know what you are planning to paint, they most likely have a House brand that can move you into.