There are a number of spreadsheets and Kia's new on line tool.
Your best bet is to take your favorite recipe and enter it. At first glance to someone who is just now looking into the water chemistry thing, you will at least need RO to dilute some. Too get chloride and sufate levels up with the 'normal' tool kit you will be raising the calcium too.
But, best to get a tool and just look at the implications of your favorite recipes and go from there.