After reaching Midare Setsugekka it's about priority:
Which of Jinpu,Shifu,and Yuikikaze's buffs are closer to falling off?
Is Higanbana's DoT almost done? If yes then get 1 Sen to put it back up.
When you get 3 Sen is Hagakure ready or almost ready and do you have 40 or less Kenki? If yes then use Hagakure,if no then use Midare Setsugekka instead while ALWAYS using it with Hissatsu: Kaiten

Special notes:
Iaijutsu does NOT break combos. "Example: You open 3 Sen for Midare Setsugekka but Jinpu's 15% Damage up falls off,you could do Hakaze > Jinpu > Midare Setsugekka > Gekko(Getsu Sen opens)"
Starry Eyes might possibly only cost 15 Kenki according to the Japanese tooltip + players experence. Based on the "5 Kenki=60 Potency" rule then Starry Eyes would be better to use over Hissatsu: Shinten. If it is 25 Kenki then there's no point to use it