Looks really good but keep in mind you won't reach Critical Hit Cap.
For Rainbow Rose and Corn-Shan (only on the first turn though) it doesn't matter but the other three only reach 70 % Crit Chance.
Also keep in mind Corn Cockle can "only" reach 68 % Skill. Act. on the first turn and the other turns if she has 5 Skill Levels.
Corn-Chans best turn is the first one and if you can't make sure that she activates her Skill there she will lose a lot of value.
I know that's an unpopular opinion on our subforum (I like First Turn Girls though ) but if you want to go with Corn-Chan i would include a "First Turn" Girl in the Squad.