First boss battle went well, had to use some items to replenish HP/SP towards the end.  Basic attack with what does the most damage and heal when needed with the healer strategy.
 
Next level of the dungeon turned out to be easy, was expecting harder foes.  But this is Normal after all.
 
I do wish there was a way to figure out how soon someone will become "tired" though.  Probably missing something crucial.