I don't really see a problem, except for "Dona nobis"; a bit of planning and penciling is called for at "Qui tollis" & "Sanctus" but that's usual for 3-way divisi anyway. If you're under US copyright and can improve on the Curwen layout though, go for it!
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.