Jump on it. The KAK braces are fantastic and really help with pistol shooting stability. I love mine. Super handy size for what you end up with. I found the original Sig brace, while innovative, was far too unwieldy and cumbersome and heavy. There's some other braces out there but I only know/experience the KAK which is light and flat profile. I really like it.
Keep in mind that some owners report reliability of cycling suffers with barrels under 10" so I'd stick with 10" or prepare to make mods to ensure reliability.