If i could suggest some basics to help (ratios can be slightly changed)
a basic veg formula (salts or organics, your choice) with and NPK ratio of 2-1-1 (6-3-3, etc...)
a basic flower formula, with NPK ratio of 1-3-2
a micro nutrient formula (Fe, Mg, Ms, S, etc..)
cal - mag if you use RO or...