I know..everybody has opinions on the type of paint to use but my questions are concerning acrylic enamel. (1) How long before you apply the clear? (2) Should I use a hardener in the color coat and the clear? (3) How long before the color sand and buff? (4) Can you color sand and buff the color coat only? (no clear) (5) How long to wait before sanding / buffing just the color coat? Thanks in advance for any guidance you can give me guys.