The formation is fine, because the chases are unique and doesn't affect one ninja :)
So it works like this:
If kiba uses his mystery skill on that round
Kiba mystery skill then hinata will attack because kiba did repulse and hinata will do knockdown and your main character will follow hinata's knockdown and sent the enemy to high float then kakashi will do his two chases
If kakashi will use mystery skill on that round
Kakashi mystery skill and ends up knockdown and your main character will follow and do a high float and then kakashi will follow from high float to low float and ends your combo because you don't have anyone that will follow after that
Same will happen if they use normal attacks
always look for this kind
if a ninja causes look for a ninja that has chase and attack the