I have a similar setup for cooling.
5800X w/ Kraken 360 rad. 3080 w/ Eisenwolf 360.
The eisenwolf is a beast! Keeps the 3080 under 60*C under the heaviest loads and for "casual" gaming like World of war ships, with VSync enabled the fan profile doesn't even spin the fans up. Silent gaming.
The Kraken is a waste of time. An air cooler would probably do better. The issue is the transfer from the CPU to the cooler. The temp delta under benchmark load STARTs at like +50*C and gets worse. So if your water temp is 25*C your CPU will hit 75*C immediately under full load. It will then slowly soak rise to 85, 95 and throttle. The water temp is still only 32*C. I don't see the point in this. If the cooler can't get the heat away from the CPU it's a complete failure.
If you can stretch, I would recommend you do what I intend to do, to fix mine. Use the Eisenbar CPU AIO. Then link the two loops and top it up. A proper, copper cooler "should" improve things over a cheap AIO. (A kraken is not cheap!).