Next Performance Callout

I was trying to figure out if I could have a callout of sales metrics for the next show in the season by using some sort of widget filter and ranking.  I'm coming up short, however.    I tried ranking with top 1 of Performance Date:

That seems to work in some cases but not in others, so I'm not completely comfortable with it.  Also, I'm pretty sure that if there are two shows on the same day it will choose one arbitrarily.

It makes me wonder if there might not be a way to include in Analytics dates a field that is just the raw number so that you can do direct date comparisons.

Okay, I think one problem with this will happen when that performance passes.  I need another filter to filter out past dates, but you can only have one filter on each field, so if I try to add something like that it deletes this filter.