March 17 Arranging music

Got a MK Music Cooperative (teachers)concert on the 21st March coming up: I am going to perform mostly in english so they can understand the words - as an extra bonus - from our rehearsal on 21st March (Horologe Voices) I will have the lovely Helen Brauer on baroque cello - so I have written out a rather dashing line for her in Purcell's "Fairest Isle". She is complaining that it is in too many flats. However, as in the evening we only have a piano that isn't transposable - the pianist is being given a version in a different key (G) so Helen and I can perform at 415. I have been using Musescore to write out my arrangements. Hope it will sound ok and not too Victorian!