It took me 7 months to prep what I thought could be done in 2 months. Anything worth doing is worth doing slooooowwwwww. When you do sand, and sand, and sand and then fill, do not think primer will fill in a small scratch. It really will not, and quality paint shows every little nuance that you do not address. People have really like the paint job I have done that have seen it, it turns some heads. I know where the bodies are buried though.
If you use Perfection, do not think when they suggest to let the paint sit for at least 20 minutes after you mix it is just a suggestion. Anytime that I did not allow the paint to sit a half hour I got way, way too many tiny air bubbles when I rolled. When I allowed the paint to sit, no tiny air bubbles. Also, let it sit in the roller pan. Letting it sit in a mixing cup and then poring into a rolling pan does you no good.