I wonder about the weather its February and your taking a Northern route. I can only view part of your route but are you sure the route you are taking at this time of year is practical or better yet even possible?

The average high temp in Urumqi in February is -4.7 C it may not snow on average very much but the humidity is not low so that means ice can form. I think you are a month at least too early for such a trip. You run the risk of hitting ice and also even snow storms.