Hello, which is the best area to visit first- East gate, North gate, West gate of Summer Palace?

Generally speaking, most tourists will choose the following route:
East Gate - Hall of Benevolence & Longevity - Wenchang Hall - Hall of Joyful Longevity - Long Gallery - Hall of Dispelling Clouds - Tower of Buddhist Incense - Nanhu Island - Seventeen-Arch Bridge - Bronze Ox
In addition, the duration is around 3 hours.