You sound like you got it down. I wouldn't add anything else. I would save a bit by not changing rez untill I topped up with 15 gallons of water or 2 weeks whitch ever comes first. I might go up on cal-max if I see any signs of defisncies.

You need to measure your nute PPM's first to bring to the strenth you want and then add additives.

Only thing else you need to add is love.
LOC NAR on probation Reviewed by LOC NAR on probation on . How much, is too much? I change my reservoir every week with 15 gallons of distilled water and add these solutions: 65 ml of CAL-MAX (like Calmag) 170 ml of DNF GOLD (additive, increases nutrient absorbtion and flower sites) 285 ml each of DNF Bloom A & B 9.5 grams of DNF Bloom Fortifier (Additive) Rating: 5