>> 1.5g table salt
I disagree. You NEVER want to add Iodine to your mash, it's toxic to yeast.
If you are going to add NaCl make sure there is no Iodine.
Also, with just 3 ppm Chloride, I suggest adding some Calcium Chloride, say 5 grams.
I also think you need less Magnesium Sulphate.
8.1 Ph is a bit high, maybe some Lactic Acid (or Phosphoric Acid or Acid Malt) for Pale Ales/IPAs.