Hunan, Zhangjiajie Trip

Hi, i am travelling to zhangjiajie in april for 10 days with my wife. please help me with a few question cause me and my wife are senior citizen and first time travelling to china
question
1. I am flying to changsha from singapore where do i stay any suggestion convenience location for hotel.
2. please teach me how to go to the hotel. I prefer 4 star hotel clean for a night sleep.
3. how far is the chang sha airport away from town.
3. are there any attraction in chang sha to see.
4. how to go to zhangjiajie from changsha town?.
5. is fenghuang ancient town nearer to chanh sha or zhangjiajie.
6. should i go to zhangjiajie first or fenghuang ancient town first.
7. how many days should i stay in chang sha, zhangjiaJie and fenghuang ancient town.
many thanks
hok sum