I too think this is a great oportunity if you are equipped with the necessary pacience to see your project grow!
Since your land is in the mountains, you may want to check out Sepp Holzer. He works in a similar climatic setting in the austrian alps.
Importan: Watch out for regulations (I am Swiss too ...): In which territorial planning zone is your land, and what are the local/cantonal restrictions for the location? If it is steep, you can get govt subsidies under certain circumstances (you have to be a certified farmer). There are bureaucratic hurdles to cut down trees, specially if you have a real forest on parts of your land. If constructing swales, remember you may need a construction permit (different for each municipality). If you are in the agricultural zone, you cannot build anything to live in.
You can find out a lot about the regulatory framework and general information on https://map.geo.admin.ch/
(that is, forest zones, geology, soil classifications, natural hazards etc)
Then there are the cantonal geoportals. I used to work with this kind of information, feel free to message me where your plot is and I can do some research.