Should I stick with the theme? (Read description)

So this is a bit of a weird one but here goes.

I have 5 siblings and our initials line up as the first 6 letters of the alphabet, in order. My older sister is Addison, my older brother is Benjamin, my name is Cassidy, my younger sister is Danielle, my younger brother is Eric and my youngest sister is Fiona. It was just a fun thing my parents did.

But then my older sister named her sons Grayson and Hunter. And my brother named his daughter Isla. And now I'm pregnant and they keep urging me to name my daughter something starting with J to "keep the theme."

My husband thinks its great and is all for it, and there are actually some J names I like, but there are other names I like too. And if I do this then I'm kinda signing myself up to keep the theme with any other kids I have and I don't know if I really wanna commit to that.

My sister Danielle has already said that when she has kids she wants to go with the theme too.

Do I keep to the theme or not? Is it too tacky and silly? Do you think I'll regret it? Or do you think it would be weirder not to go with it? What if my kids are the only ones not involved? Would they feel left out?