Anyone feel like helping me hash out a boys name?

[meow]

I'm SO lost on a name for our baby if we have a boy! I'll give you my faves and my concerns/thoughts and I'd love some further thoughts and input

My 2.5yo son is Espen M Kelsie. The M is my H's name following a family tradition so this baby will have a name from my side of the family.

I'll start with middle names as they've been hard. I don't want to use any family names from my Dad or grandparents. I can't think of a good variant for my name. Other option is to use the meaning of my Mum's middle name, Gaye, and use a name that means happy. I really like this idea and my fave name with that meaning is Felix.

I love X names but will a middle name with an X make it too many X names? Any other middle name ideas??

How about:

Baxter Felix Kelsie- how does Baxter go with Espen too? Baxter seems a bit more 'formal' tome but H thinks it sounds fun... what do you think?

Baxley Felix Kelsie- too much with the "e" sound at the end of the first and surname?

Paxon Felix Kelsie- too much with an "n" sound at the end of both children's names?

Griffin Felix Kelsie- same issue with the "n" sound and do you think Griffin is becoming a fairly common name? We like unique names.

Zeke Felix Kelsie- I love Zeke but is the "ke" at the end then beginning of the names too much?

Help please!!