Why not learn to read the notation as is instead of retypesetting it? There are a great many resources including online classes, videos, and other instructions. It would be tremendously useful.
For @Ally: Sometimes singers who aren't familiar with the square notation can be intimidated by it. If that's the case, then writing the score in modern five-line round-note format can avoid one source of fuss.
I totally agree! I didn't mean to be dismissive, but rather encourage AP23 to check out the different resources for learning to read it, and eventually not only rely on modern notation. I understand the reasoning, but I've also come to understand (and am still learning) how much more nuanced our dear square notes can be. So I would encourage anyone to really begin exploring it. Once I did, it was like stepping into a whole new world.
Since AP23 has mentioned a liking for rhythmic settings, I suggest taking a look at the "Hymn Tune Introits" listed there. Those are hymn-style adaptations of the entrance antiphons with text by hymnwriter Kathy Pluth and music by composer Charles Giffen.
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