Totals on Stacked Bar Charts and Date Filters

I would be great if each bar in a chart had a total at the top as well as the individual totals for each stacked category. Currently, I have to add them up manually but a total of each bar on the x-axis would be really helpful to see.

It would also be amazing If I could filter the results displayed in the chart between dates in a date field. It’s great at the moment as it shows me leads added each month, but when it’s been 3 years I’ll have 36 bars on the chart which might get a bit messy. If I could filter date periods I could break of new charts and keep them nice and clean.