Route planning Lake Constance Bolzano

Albulapass Lake Constance-Meran Nice Christmas to all and good ride in 2020 winter time is planning time. Yes, I know what planning means. Planning replaces the accident with error! To minimize the latter, now my question: We want to go to the Dolomites in June (9th-15th) . Arrival from the Eifel via Lake Constance to Bolzano. I have planned an overnight stay in the area Singen. The next day should then pass the Albulapass to La Punta to Merano and on to Bolzano. – how is the road condition? the pass road? – possibly still closed due to snow? – is this route (about 350 km) feasible? We want to go at 0900-0930 and arrive at the latest around 1730! – are there alternatives? Yes, about St. Anton I know. – Vereinatunnel? Who has experience? I am grateful for every tip. Merry Christmas Achim