What's your Cl?
Personally I like my german pilsners nice and snappy with SO4 above 100 with a SO4:Cl=3 however I don't think many would take that approach.
I personally wouldn't use the same water for pilsner and kolsch but if I did I would probably go for something between yellow balanced and yellow bitter. Again, that's just me. Most people don't tend to agree with anything I say. Ha!