I need your help, I am getting ready to build an outbuilding behind my house in order to use as my Studio, I quilt, sew clothing, scrap book, rubber stamp, I do a lot of crafting. My question is, How big should it be, I have looked at many pictures and gotten many ideas about organization, storage, lighting, etc, but no place does it say how big the area should be. I was thinking about 14 x 18, do you all think this would be sufficient, or can someone help me figure out the size