Trad Rack For Berner Oberland

Dear all,

I've just moved to Berner Oberland and I am planning now to start building my trad rack. I Would like to have a recommendation(if there is any...) on the best sizes of nuts and cams for this particular region to start with! What would be the minimum amount of gear that would allow you to do most of alpine mixed alpine routes...

Thank you so much for your feedback!!