Yesterday I heard that your book will appear in April. On the internet I saw that there is to appear a critical edition of 94 offertoria as well. I am looking forward to this. It would save me a lot of work in preparing new pieces for performance.
I have been preparing an edition with a selection of Gregorian chants as well; with an emphasis on offertoria, responsoria and unpublished chants. This edition could be interesting especially because of the notation.
In Dobogoko I have given a presentation on this notation, called Fluxus. It simply copies St. Gallen-neumes on lines. For dyslexics and shortsighted people (like me) this is much more accessible than neumes written "above" the staff.
I wonder what you would think of a publication of your offertoria in Fluxus-notation? Please have a look at: