Guilin-Dazhai in july

Hello,
I just booked a hostel in Tiantou village. I've been searching the internet to find how to get to there from GL North Railway station... I've seen many things, but nothing seems clear to me.
Here's what I understand : (by the way, My train arrives at 5am in the morning...)
- From the North Railway station i have to go to GL Railway station. probably a taxi is best. how much should the taxi cost ?
- there I should find buses at 8.30 and 9 am which will bring me to Dazhai directly. gongche duoshao qian?
- and from Dazhai It's a hike to Tiantou village.

Can anyone help clear this up for me...

Oh and the next night I have a reservation at Xingping... how should I go about getting there ? GL-Yangshuo-Xingping ? or is there something simpler?

As you can see my time there will be quite short, so the better i'm prepared, the more of the rice terraces view I'll enjoy ;)

Thanks a lot.
Sylvain