Wao Dao+ Steady Breath+wrath? good combo for marisa with high defense??

It does all stack, if I recall correctly. Wo Dao+ doesn't affect cooldown, so there's no issues there. Steady Breath gives you charge, while Wrath reduces charge, so it should all be A-Okay. Not sure if you should invest that much onto a Marisa, but if you really want to, then sure.