Hi, I have painted allot of cars and trucks in my life.I think that a single stage urethane color over your primer will be fine but read the paint literature. I reserve clear systems for new cars that require two stage systems. Clear tends to show allot of dust and imperfections, paint only magnifies flaws, spraying primer is not the same as color. You might want to get someone to spray it who has experience spraying color.I hope you wet sanded that plane down to 600 or using expensive paint systems it a waste. Just my two cents!
