Private car or taxi to Zhangjiajie from Fenghuang

I will go to Zhangjiajie from FH ancient town, I checked daily bus schedule but the first bus is 8.00am so we cannot arrive to Zhangjiajie before 12pm, so we would like to use the other transportation. Do you know how much for car rental or taxi (7 seats) from FH to Zhangjiajie in estimate?
Thank you!