Well, that idea is being scrapped with a new concept that will employ the current Psalm 151 and my original conception of Psalm 152, dubbed the "Christus Vincit Gradual". Keep using Psalm 151 for Mass for Sundays and Solemnities. It will probably take a year or so before the "Christus Vincit Gradual" is finished.
STAY TUNED!
Peace,
BMP