In the rubrics of the Extraordinary Form Office, is there as strict of a distinction between the spoken and sung Office like there is with high and low mass?
You might also consider getting the Little Office of the BVM from Baronius Press. It has the chants for the Office listed in the back. And it's the same Office every day, so you can spend more time improving the same set of psalms.
To participate in the discussions on Catholic church music, sign in or register as a forum member, The forum is a project of the Church Music Association of America.