Digital BW, The Print

I'm giving my first steps  with IJC/OPM  together with Piezotones  and the 7500.
I've ordered the The Piezotones  that usually are used  with this printer  and their canned 
profiles or StudioPrint as follows:

1xBlack
1xDark Grey
2xMedium Grey
and 
2xLight Grey


I noticed that  the profiles that came  together with IJC/OPM for Piezotones with the 7000 
and 9500 use  two Dark   instead  two Light Grey that I have now in my 7500. 
Am I missing something or  is possible to use both combinations  to obtain hight quality 
results.
As I said I'm  beginning with   the first experiments with both IJC/OPM together with the 
Piezotone/7500 combo so any advice  will be welcome.
Thank you in advance for any input concerning this matter.

Manuel Gomes Teixeira
Punctum Studios
Portugal