It depends on what you will do/have done that day. Normally it would be better to have a shower in the morning (to wash away the night's dirt and sweat, and make you clean for that day). But lets say you have been out in the hot sun sweating, after you would want to take a shower So it just depends what type of person you are!
Do not use a Fram filter. They are of poor quality. Use a Wix, Purolator, or Bosch.