Ask @jakads:

Hello! Your acc on 9-10K maps is insane, even on hard ones. How do you even get in 9-10K? Going from 4K to 7K: the more time you spend playing 4K, the harder it will be to get into 7K. Does the same apply to 7K -> 9-10K? These maps are fun, but I wonder if starting the sooner is the better.

you already know the answer apparently :^)
here's my key config if that helps
9K: asdf space jkl;
10K: qwerv miop[
18K: qwerasdfv mkl;'iop[