The following are my honest opinions:
The only name I like is
Grace. And
Lynne, if spelled that way, for a girl.
Lynn to me is a male name.
Haleigh and
Kelsie are way too similar for twins imo. Imo, you can change the spellings to the orignals of
Hayley and
Kelsey; you'll still honour your family members, since the names are exactly the same except for the spelling. I will also say that I prefer both names for boys only, of course.
Royce and Landley are very masculine to me and don't suit girls at all well imo. But they're better because they're mns, so it doesn't matter quite so much.
Miranda