Mix the cake flour, bread flour, baking soda, baking powder, and coarse salt in a bowl.
Cream the butter and sugars together until light and fluffy.
Add the eggs one at a time, then stir in the vanilla.
Gradually add the dry ingredients to the wet ingredients until just combined.
Fold in the chocolate chunks.
Scoop the dough onto a baking sheet and refrigerate for at least 24 hours.
Preheat the oven to 350°F.
Bake the cookies for 12-15 minutes, or until the edges are golden brown but the centers are still soft.
Sprinkle with sea salt while still warm.
