This is the inkset that I have used very successfully since 2016:
It will soon be in both my 7800 and 9800. (A failed monotone inkset currently in the 7800 is going down the drain.) I keep looking and trying approaches that might seem easier, but so far this one continues to be the best performing one I've used. Profiles for it are in a zip file that is linked to the PDF.
Note that there is no longer any advantage to using dilute Eboni for matte printing. The new Eboni is not more neutral than the glossy compatible inks. As such, I no longer use Eboni-6. The Glossy Carbon VT can do it all (for B&W, of course).
Paul