Clarify fees and transportation avaliable and times

We plan to come around May 19-May 22 2014 for 1 day only. We plan to hike up from the bottom to the top and take a cable carts down. We will be staying at Grand Hotel Noble Xian on East Street, Xi'an, Shaanxi Province, No. 334.)
So far after reading your website and other comments the fees that I have identified are:
1) drinks and food
2) round trip train pass (how much round trip? and what time is the last train ride or is it 24hrs? how far in advance may I book a train pass? is it advisable to wait to book the train pass and bus pass when I arrive at Xian?
3) then you stated from the Xian railway we have to take the #1 bus line to the tourism center (how much is a bus ticket round trip per person?)(what time is the last bus route or is 24hrs? is pick up every 15mins?)
4) find transportation from the tourism center to the bottom of the mountain (how many miles is the tourism center from the bottom of the mountain??) ( are there taxi or transportation available without reservation at the tourism center)

Here are my other questions:
1. If I get tired along the way to the north peak am I able to take the cable cart before I reach the peak? or is the only access to the cable cart at the bottom of the mountain and at the north peak?
2. are their bathrooms and may be purchase water available during the 5hr trek up to the north peak?
3. does Mount Haushan close for the day? we are part of vacation package and cannot stay overnight.
4. what time is the last cable cart from the north peak to the bottom?
5. are you able to assist us in setting up our transportation from our hotel to the bottom of mount huashan?


Thank you
parong.charityyahoo.com
Charity Parong