I brewed this one on Sunday and went high with my Cl as well, I ended up with different numbers than you though. Started with 100% RO water;
Ca: 97.3
Mg: 12.0
Na: 36.1
SO4: 100.0
Cl: 179.9
Bicarbonate: -21.0
For salt additions BruN' Water gave me;
Gypsum: 0.35g/gal
Epsom Salt: 0.46g/gal
Canning Salt: 0.27g/gal
Calcium Chloride: 1.04g/gal
Also needed a touch of lactic acid to get it down to 5.4 pH. It's bubbling away in my basement right now so I have no idea if this was a good idea or not.
That is essentially what I add, too.
0.36g/gal Gypsum
0.46g/gal Epsom salt
0.27g/gal Canning salt
1.07g/gal CaCl
Ca 99
Mg 12
NA 28
SO4 100
Cl 180
Both batches I've done with that have tasted great.