Write the total collected Knowstones after each run in a single bag slot.
Based on campaign logs and feedback so far, the average number of runs to get a perfect run and complete the campaign is between 16-24 runs. 32 runs is around the max to complete all Feats beyond the campaign.
Remember as you unlock more abilities, 7+ Knowstones runs become more common, further accelerating your unlocks and path to a perfect run.
Unlocking every ability plus at least the Ace mastery in each suit costs 72 Knowstones / 32 runs would require an average of 2.25 Knowstones per run. I'd think once you have a handful of abilities / some mastery, you should be able to consistently beat that number resulting in faster progression to achieve the campaign win.