As an owner of Focal 836v speakers, I think you'll be more than satisfied with the newer Focal 936 and will find that you'll have a lot of untapped potential with the rest of your setup. I used mine for a long time with an Integra 50.1 receiver and have since shifted to a Pathos Classic One Mkiii. My dream would be the Pathos sound with a home theater bypass option since I still have the speakers connected to the Integra with an amplifier switch for home theater type use.
I'm sure the Katas would be amazing, but you'd really want to upgrade everything around them at a level that's well above your current setup.
If you're goal is to spend the kind of money that a speaker like the Kantas deserves and they are a good deal, then it might be the time to make the jump, but I doubt it.