Billie for a girls name?

Recently my grandfather passed and we both agree that we’d love to honor him by naming our child after him.

His name was William but the world knew him as Billy. My grandmother, his wife, is named Lynn. My entire life my mom wished she names me Billie Lynn. I know it’s not common nor popular but it means so much to me that I absolutely adore it. My husband is not exactly a fan to say the least. So instead of naming our daughters first name Billie, I was thinking of having a double middle name.

I am struggling though with coming up with the first name!! We have always loved the name Kennedy, just not sure it all works together....

Kennedy Billie-Lynn ??

Any first name suggestions??

Also our last name is beach so using Billie as her first name sounds odd to me as well. Billie Beach? I’m not sure I’m a fan lol