It tears a piece out of my heart to have to say this, but we will omit Hildegard of Bingen (and St. Francis), and after Heloise go straight to the Carmina Cantibrigensia in R.M.L. So our final readings will be:
RML 15.1: Carmina Cantibrigensia
MM 136-7: Cambridge Songs
RML 20.2: Carmina Burana
MM 224 ff.: Carmina Burana
[Possibly Walter of Chatillon]