Good middle names??

Kennedy • Married to my soulmate since 7.4.2020!💍💞 We have a 4 year old son, who took a year and a half to conceive! We are expecting baby girl March 11th 2021 after 2 1/2 years of ttc with fertility treatments 💖

For a boy I really LOVE first names with Ks. So Ive decided on Kayden for the first and im thinking Grey for the middle. But I want to explore some options before I stick with a name. Any ideas for a middle name? Cant end with an N sound since the first name does.

Also for a girl I LOVE the name Acacia, but I dont want her to be called Casey for short. I was thinking Acacia Shae or Breelie(or Breely)Shae. Would like some suggestions please! Thank you !👶💕