What size is your tank?
1) Figure out how much fertilizer your tank needs in a week. (use the EI chart stickied at the top of the Fertilizer Forum)
a) Macros: N, P, K
b) Micros: All the traces, Fe
c) Other (in case you need to dose GH booster more often than with water changes)
2) Figure out how many doses you have in your bottle. For example, a 1 liter bottle might be dosed at 1ml/3 gallons, in a 30 gallon tank and so use 10ml per dose, so 100 doses in the bottle. This is not too far off a 3 month supply. (3 doses per week)
so, put 3 months worth of fertilizer in the bottle, fill with water. Shake well.
You will have to do the math depending on what size your tank is.
I find that dosing at 1 ml per 3 gallons is about as concentrated a solution as I can make. I need to shake well each time I use it.
Then, go back to the blends you already made. Are any of them close to what you just figured out?
Pretty close? or Not too far off? Use them as is, and monitor the tank.
Way out there? Add more of what is missing until it is at least somewhat closer. Monitor the tank. After about 1-2 weeks see if you need to do more adjustments.
Note that the EI method assumes you are running a high tech tank. It doses all KNO3 as a source of potassium. If your tank does not need that much NO3, but does need that much potassium, then dose only enough KNO3 to provide NO3, and use K2SO4 for the additional K. I am running low tech tanks, and dosing about the same amounts of KNO3 and K2SO4 so the NO3 does not climb so fast. Looks like you started to do something similar.