I am having trouble deciding where we should place shower heads in our new master bath. We were planning on two shower heads and 4 wall jet sprays (2 with each shower head). I numbered the walls in the image to make it easier. We originally were thinking of putting them on wall 1 and 3 but worried the shower is to narrow. Not sure if we should look at putting them both on wall 1 or one on wall 1 and one on wall 3. The valve to turn on/off shower will be at opening where v is showed on picture. Any help will be wonderful.