I don’t know if you are aware of @wojtryb’s ‘Shortcut Composer’, but that is a very good addition to Kanvas Buddy, and in many places a replacement as well:
Michelist
Add/Edit: If you additionally install “Krita-UI-Redesign” from @slightlyangrydodo, then you’ll have an extremely comfortable workspace with everything one could possibly need while painting. At least, if you don’t take your favorite drink and small snacks for in between into account.