do you recommend to visit Huangshan?

Well, all of those attractions you mentioned are worth visiting. You can arrange your tour to any one of those scenic spots according to your travel time and interest. Anyway, I prefer Zhangjiajie and Guilin.

As a Chinese, I should say that Huangshan has the most beautiful scenery in China, and is known as 'the loveliest mountain of China'. What's more, you can experience a unique culture about ancient China. Compared with Huangshan, Zhangjiajie an Guilin can only show people natural scenery.
Scenery in Guilin is similar to part of Huangshan's scenery, so choose both Huangshan and Guilin may not be the best choice.
Suggestions:I'd like to point out that there are many fascinating tourist spots in Yangtze River Delta, whichi include Shanghai, Huangshan and many other cities. So why not to choose a city in this area? Hangzhou, Nanjing, Suzhou etc. also have wonderful scenery, and close to Shanghai and Huangshan. This really helps to save time wasted on transport. Thus more time is available for the visiting.