I'm not sure if UltimateChaos or regular Chaos is better here, but it's going to be one of them. I'm leaning towards Chaos since you can get good effects from him earlier in the game.
The Ukkos are another way to get Assembly online, as well as roll for another chance at a rookie you can use next turn. We have to run another egg because of it and the Mimi.
The Bancho/Saber ratios are up to you, but Heavy must be at 4.
You can run MadLeo instead of LeoX. Both are valid. The recovery is nice for the Chaos though.
Extra Zubagon for aggression yes, but we need to get bigger than Mother D-Reaper. You can run starter deck Shoto instead of Mimi but it's a little clunky since we don't have a ton of cheap suspension effects, and she will provide some of the aggression that we're going to need to go around the big body.