I think
Kelly and
Cassie are good together (like from
Cassandra). Also my cousin is having a baby girl. Both her and her husband wanted to name her after their mothers
Jennifer and
Isabel. They ended up naming their girl Jennibelle. I think it's a realy cute idea. Why don't you play around with family names? My aunt has twin boys called
Jack and
Joe so sounding kinda similar isn't a bad thing.