I've thought about it too, but the voices are too close together, and to move it high enough that the soprano could handle the lowest note would entail transposing at least up a major sixth (making the lowest soprano note G), but now you'll make your tenor have to go into the stratosphere. If one of your male singers can double as a countertenor, then you can make essentially a Mezz-A-A-T version that way.

I, too, noticed the closeness of the voice parts, but I have come up with an arrangement for MzATB voices, transposed up a fifth from the original, with some part swapping to facilitate placement of vocal ranges. I'm still working on some editorial details (including text underlay), but here is what I have done so far.