Hi,
 
I gather all 10 groups are still active.
 
Having 10 talks on one day would be challenging, even if we would do 10 minutes per group.
So I suggest to go for 15 minutes per group and five per day.
Besides the regular Wednesday slot I suggest the Monday in that week, i.e. two days earlier. Seemingly most can in principle on Mondays, going from the feedback sessions ?
 
Regards,
Jochen