Second middle name for boy?

We finally agreed on a boy name, which is always a challenge. I will find out boy or girl this week and would like to have the name before that. Here is the boy name we chose, I am looking for a second middle name that flows well (all of our children have two middle names).

[name_m]Arrow[/name_m] Keanen ________ L.

Keanen is my brother’s name, so I’d like to keep that.

[name_m]Arrow[/name_m] Keanen ___ L
[name_m]Arrow[/name_m] is self explanatory and I like it for so many reasons …
Keanen is Irish meaning ancient?
I like the namesake very cool …
Would you think maybe a single syllable name not beginning or ending with a matching letter or sound and that’s not a clear word but maybe has a nicely connected meaning? [name_m]Even[/name_m] something like
[name_m]Arrow[/name_m] [name_m]Keanan[/name_m] [name_u]Pax[/name_u] L. ?
[name_u]Pax[/name_u] I think means peace in Latin? but its not gloatingly a word …
Or if that’s too short I would avoid a second 2 syllable middle so it doesn’t seem repetitive like arrow keanan david L … Its just kinda name name name … Something like
[name_m]Arrow[/name_m] [name_m]Keanan[/name_m] [name_m]Valiant[/name_m] L ; )
Or
[name_m]Arrow[/name_m] [name_m]Keanan[/name_m] [name_m]Josiah[/name_m] L
Or
Another 3 syllable name that suites what you’re looking for … What style name are you interested in ?

I don’t really know exactly what I want, I am pretty open. I don’t want it to sound ridiculously long, so a shorter second middle may be good.

I like the idea of a short third name so some suggestions…

[name_m]Arrow[/name_m] Keanen [name_m]Brooks[/name_m]
[name_m]Arrow[/name_m] Keanen [name_u]Rio[/name_u]
[name_m]Arrow[/name_m] Keanen [name_u]Tate[/name_u]
[name_m]Arrow[/name_m] Keanen [name_m]Milo[/name_m]

The name has a really big meaning! For a boy specially!! You don’t need to think ridiculously names, just choose smth resounding and short!