I propose that we at least try to see if a certain date would work. There may be one such date, but there may never be one that works for all the parties. If we see that no one is available on Tuesday or Thursday, we can move on to another study and postpone this one until the fall, as I see that there are other proposals on the table. However, with a bit of luck, the witnesses may be available. It would then be appropriate to start our study on Tuesday or Thursday, even though it may be postponed should the time frames be too short.
I suggest that we at least try that.