In summary, in my opinion. I'm sure some experts will be along soon.
Your Calcium looks high enough without any additions, so you don't need the Calcium Chloride or the Calcium Sulphate as they will increase your Calcium but also increase your Chloride and Sulphate as well.
As you don't make hoppy beers, having a 1:1 Chloride to Sulphate ratio is probably fine. You already have a reasonable level of both.
You may want to reduce your alkalinity a bit, depends on your recipe, for a full on Stout you probably don't need to reduce it, but for Milds and Porters you may want to reduce it a bit, down to about 100 maybe.
What you reduce it with is up to you, AMS will reduce it but increase both your Chloride and Sulphate levels, which for the type of beer you are brewing that would probably be fine.
If you want the hops to sing then I would use Sulphuric Acid to reduce Alkalinity as that will just increase the Sulphate levels. Be careful with the Acid, it is strong, 5.08 Molar.
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