If you plan only to do this 7 trips, than a 7 day flexible Eurail Global pass is right to you. 

A travel day starts from 00:00 to 23:59 Central European Time CET. You can take so many trains that you need in this time. If you board a train before midnight and don’t change a train after midnight, you use only 1 travel day instead of 2. 

Please keep in mind, that some trains require a reservation. 

Ask yourself whether the relatively small difference in price for the extra 3 days would be useful for short journeys in any of the stops.

ONLY 1-1 -also probably the nastiest to do=Thalys-and 6+7 MUST be RES-the rest can if youre to anxious to chance it, and for 5 you need to pay a surcharge of 10€ for cross the border on it AT-IT. Can do till 3 mins before dep. at Innsbruck station. Earlier too, of course.