Hit them once with nitrogen + solid dose of micronutrients in veg, and twice with pure cation solution in flower to enhance the positive CEC, and that'll do the job.
Yes that's about it if you want the tastiest and strongest medicine in High Brix region As a nitrogen fert I'd use something relatively low in N like compost tea, some kelp maybe or even seaweed, but don't overdo it. I personally use a mixture of stinging nettle and horsetail, but don't know how it will be available in your parts. Now to understand well what is CEC just google it and check how it works, with your mix it's gonna be pretty high, so you just need to inoculate with mycorrhizae as soon as you pop the seed to make sure they're getting the help they need to develop the root. To make them absorb cations you need to use a mixture of phosphorus+calcium+magnesium+sulphur with low potassium and low nitrogen, just see what works for you best here