Thanks for the helpful comments, sir! Also, to clarify, I was not planning on sparging, however, I played with the numbers some more and got much closer to where I want to be.
Ca - 48 ppm
Mg - 10 ppm
Na - 25 ppm
SO4 - 34 ppm
Cl - 41 ppm
HCO3 - 146 ppm
pH - 5.48
Unless I overlooked something or...