VERY nice equipment!
While the AK is my favorite platform, and 9mm my favorite pistol round due to velocity and the fact they expand up to .72” on impact, I see little reason to combine the two. One large advantage to 9mm is basically no recoil impulse, which would be much greater recoil given the Kalash action slamming back and forth. While I would be interested in experimenting with 9mm loads with a slightly slower burning powder in a longer, rifle length barrel, preferably 147 grain, I’m not sure an AK is what I would try it in. I’d have it for my collection if for nothing else.