Kanban Sum instead of Count

I’m trying to create an interactive Client Dashboard where they can select the point-valued services they want up to an established point total based on their contract. Is there a way to get the Kanban summary at the top to show a sum of a selected number column rather than a count? Or somehow combine the Kanban view with a Number summary widget? These two elements would perfectly solve what I’m trying to create for my clients. Any ideas on how to workaround?