Travel in Xinjiang

Curious to how easy travel in Xinjiang is. I plan on entering through the Kazakhstan and China border and travelling through Xinjiang, to Xiahe and Langmussi to see the Tibetan plateau, then up to Beijing. This is over roughly 16 days. Has anyone got any idea if this is too optimistic? Bear in mind I only speak English and wasn’t planning on booking any travel before I go but just book the trains / busses when I’m there, and maybe hitchhike if possible some places. Is this an unrealistic route or should I do it but with precautions. Any info/advice/hacks would be super appreciated as I’m super excited but just not sure how rushed this trip will be, especially due to the long distance between Almaty and Beijing.