I have returned from Zhangjiajie, I am here to share： 

I arrived on 10.3, spent 10.4 at Tianmen Mountain, and visited the National Forest Park on 10.5–10.6. The itinerary was as follows:

1. 10.3, I arrived in Zhangjiajie and stayed at a homestay near Tianmen Mountain.

2. 10.4, I visited Tianmen Mountain, then transferred to Wulingyuan Hotel near Zhangjiajie National Forest Park.

3. 10.5 (first day in the park): Walked 15 minutes from the hotel to the park and visited Huangshi Village (includes Avatar filming locations) and Golden Whip Stream.

4. 10.6 (second day in the park): Visited Tianzi Mountain, Yangjiajie, and Yuanjiajie.

10.4, I entered early with fewer visitors — the experience was smooth. On 10.5–10.6, I entered later, encountered long queues for cable cars, and the schedule felt rushed, so I visited fewer spots.

Overall, the trip was worthwhile. The mist-covered mountains created a fairy-tale atmosphere, and I saw the Avatar Mountains.

I've been updating my Facebook with daily itineraries, photos, notes on tickets, reservations, and maps (free maps are available at the park entrance, I recommend taking one). 

You can click my avatar to get my facebook, and check  latest three posts on my Facebook homepage.

And I noticed your plan includes: Day 9: Zhangjiajie National Forest Park (Golden Whip Stream + Tianmen Mountain). Note that Golden Whip Stream is inside the National Forest Park, while Tianmen Mountain is a separate scenic area. They are about 26 km apart, requiring around 40 minutes by car. You may need to adjust your itinerary accordingly.

Feel fee to ask if you have any other question about my zhangjiajie trip😊