Go with a trusted companion. You are off the beaten track. Carry a light, smart, outfit for the occasional hotel if you are in to washing. See me in Zermatt on the right in 1999. This outfit weighs less than a pound.
Current advice is 'take a mobile phone'.
Do as you please but don't take risks because you think you can whistle up a helicopter. They are very expensive. Join a European Alpine Club as you get a deal in the huts. I am a member of the Swiss Alpine Club. You can get Swiss Passes of various types fom your Swiss National Tourist Office in your own country.