I have 2 loads. Both use 158gr. LSWC or JSP bullets. For regular shooting, I load 4.5 grains of Unique. For +p, I crank it up to 5.2 grains of Unique.
I don't think you need multiple loads for what you are working with, unless you want to go +p or +p+. If that is the case, you'll have to keep the rounds carefully segregated so you do not wear out a gun that is not designed for high pressure. You can shoot +p's in a non-rated gun but it will get beaten up quick.