What would you change in this Sovereign Okinec Deck?

I pulled a couple [[Sovereign Okinec Ahau]] when I got back into Magic this past summer after not playing since I was a little kid. It took me a minute to really understand how to fully take advantage of its ability, but it's become one of my favorite decks. I want to keep it a cats only deck (plus [[Roaming Throne]] (technically a cat)), and the obvious addition is [[Ocelot Pride]], but I don't really want to spend the money on it at the moment as most of these cards, especially the high dollar ones, are cards that I pulled myself.

What would you change to this deck to make it better?

https://archidekt.com/decks/20341626/big_kitties