from Urumqi airport to railway station at night

We arrive at Urumqi airport from Tashkent at 10.30, then we need to leave for the railway station. And according to the schedule of the shuttle bus it is indicated that the last leaves at 11.00 p.m. Whether we can finish customs and border control and get on the last bus or is it better to stay at the airport and get the first bus to the station the next morning?
How much can it cost to take a taxi from the airport to the railway station and how safe is it at night?