On record, I didn't have issues with the size of her voice. I imagine live would possibly a different matter.I only wonder if she has enough voice for them. I like Piau in Handel, but I'm told the voice is quite small.
Elsa Dreisig has recorded them with piano accompaniment on her album Morgen and I believe an orchestral version is in the pipeline. It's definitely one I'd be interested to hear.
Very much looking forward to Dreisig with orchestra!