I am doing a color change as well...but more extensive repairs around the fender flares and spoiler that were installed 25 years ago. I have taken the interior down to the metal all over so the shop can paint all the door and hatch jambs easily. I am doing the grunt work and getting a shop to spray it. He did have one good suggestion based on experience...your base coat does not have to be the very, very best available, but the clear should be the best you can afford since that is the key to a great look.