Solo Traveller. I will be in Beijing in November and would like to visit the Great Wall.

I am traveling alone and only have 2 days in Beijing so want somewhere that is safe, good for pictures, open early in the morning and would have a cable car/tobbogan.

Please let me know if you would advise me to go to Mutianyu or Badaling? Or somewhere else?
Also, how cold will it be then?

Thanks!