Raleigh Street Bakery

I just recently moved to Arvada, CO, do I need to get a cottage food license to sell cakes? I am so lost on where to start.

If I use cake flour in a recipe, do I just need to list “Cake Flour” or do I need to list the ingredients that are IN cake flour, that they have listed on the cake flour box; WHEAT FLOUR BLEACHED, NIACIN, IRON, THIAMIN MONONITRATE, RIBOFLAVIN, FOLIC ACID