We have all of the items under the camp: pump, tank, two filters and UV purifier.
If I were to redo the system, I would consider a submersible pump. That would eliminate the need for priming the system each spring. Don't know if your shallow water will allow for such but I suggest that you look into it if you redo the system.
If you don't have a UV purifier, suggest that you add one.
http://www.ultraviolet.com/proreswater.htm