Looks like a good trip - although the (IMHO) Dolomites site just below some of that - it is also a lot of miles for a relatively small amount of passes, you could easily clock up that many in the Dolomites in a days ride, and for us in the UK it is no further....
...However I have ridden the dolmites quite extensively twice, and not so much of Austria, just over half of those passes listed I think.