I'm planning a bicycle trip through Norway and Sweden, ferry to Rostock and then to Salzburg and south to Italy or Slovenia in the last days of April or beginning of May. My plan is to bike to Radstadt and take the Tauernpass and Katschberg. Are this passes open all the year? Later I will go to Villach and over Wurzenpass to Podkoren in Slovenia. Is it better to bike west to Tarvisio in Italy? Are other routes preferable for a biker?