mixing the paint
a trick a old guy taught me was buy more then you need and mix it and store the color you need. Since your doing two different colors mix the second one as well. Issue is keep it simple. Door jams, all windows, valences and tough areas need to be ready, smooth and wet sanded. They money spent for all the materials will not match your man hours but the end results will be a pay off. Remove what is needed and replace any thing that is sweet to the eyes that you see. It's aggravating to go back.