Here's what we're doing tomorrow at S. Peter's, should anyone be curious. I suppose this is nothing particularly unusual or anything, but perhaps it's a good model to follow. I leave that up to you to decide.
Prelude: J.S. Bach: Nun komm der Heiden Heiland, BWV 659 (coloratura)
Processional: improvisation on Gaudete
Asperges me
Introit Gaudete
Kyrie VIII
Gradual Qui sedes, Domine
Alleluia Excita, Domine
Credo III
Offertory Benedixisti
Offertory selection Creator alme siderum
Sanctus and Agnus VIII
Communion Dicite
maybe Rorate caeli, too
Processional: J.S. Bach: Nun komm, der Heiden Heiland, BWV 661 (cantus firmus in pedal)
Postlude: J.S. Bach: Fugue in G minor, BWV 542