Beijing to Wutaishan Three Terrace Mountain by train

Which Railway Station should we choose if we want to visit Wutaishan from Beijing? Is it Xinzhou?
What is good 3* - 5* hotel near the temple ( Xiantong temple ).
How many days should we stay in Wutaishan?
If we arrive from Beijing to Xinzhou, then we have to stay overnight in Xinzhou and the next day to Wutaishan and so is on the way back. Am I right?
What else should we visit in the area? Is Taiyuan worthwhile ( we have been to Pingyao ).
Thank you.