Try to begin by working backwards. One common strategy is to plan your day according to the starting time of your ceremony. When planning backwards, take into consideration of travel time, loading your car, time to eat, etc. Your plan should leave considerable room for slack time ; you would rather have too much time to spend with your friends and family then be rushing around and feeling stressed. If you wish to take a shortcut, a common recommendation for contingency reserve is between 15% to 30% of the time you anticipate for each event.
Have your wardrobe (gowns, suits) ready to go. Assign specific tasks for members of your wedding party to do, including hair & makeup for women, as well as boutineer for men.