A driver type car with a solid color(non metallic) will be ok with single stage enamel or urethane paint.As stated metallic colors can be tough to spray and look right in a single stage,but can be done.Lighter metallic are harder to spray,like silver or light blue in single stage due to the high metallic concentration,mottling is a result.There are some decent base clear paints that are priced ok for a driver,ppg shopline for example vs their Delton line.If you have acess to Metalux paint it is good as well and priced very good,it is a polyester basecoat paint.
RT