X-Coarse diamond/cbn stone for TSProf Blitz

Hi everyone, I'm looking for a dimaond/cbn stone to complement my resin bonded edpe pro matrix 220-1000 set.

I need something extra coarse to set an edge fast and ideally not something that needs to be lapped, so no resin.

I stumbled upon the Hapstone CBN starter stones (80 grit). Any thoughts on that?

Would be great if you could recommend me something. 👍