Well, after the good advise of some of you - many thanks for that! - I have been revising my harpsichord score.
So, here it is.
I have been adding arpeggios, breaking up chords, removed the dynamics. I hope this is at least realistic for what can be done on a harpsichord.
Oh, and I found out the range is F1-F5, and I don't go lower then a G1 ;)