Clack WS1 Setting's advice

Hey everyone. The wife moved before I did (had to finish out work) and the water softener was installed before I arrived. Now that I am here I have looked over the settings and want to ensure the brilliant minds of the DIY forums agree they are the "ideal" settings. I have not completed a water test but the annual report stated that the water in this area had hardness around 20 gpg. I am not positive on how large the mineral tank is though. The measurements I took are approx 55" tall and 9" wide. Those may be off be an inch or so. I also took a few photos for you all. It is only the wife and I and according to two months of water bill service we hover around 3000 gallons a month. (We have solar panels and try to be eco friendly so everything is low pressure faucets/showerheads etc.) Here are the settings that the installer programmed into the unit. Days between Regen-13