Need help calculating nutrients using AN

Hello, I'm starting a small grow in a 10x5 room indoors using coco under 2000ww hps setup. I am thinking of running two rows of 8 plants in 3 or 5 gal buckets idk yet to have a total of 16 plants. What i'm having trouble with is calculating how much nutrients i am going to need to buy i have 2, 32 gal reservoirs and i'm going to run advanced nutrients. now i am going to be watering manually. i know you should wait till the coco is a little dry between waterings but at this size room idk how big the plants will be so idk how often or how much they will need to be watered so idk how much nutes to buy? Advanced Nutes are all 4ml/L, or 2ml/L each bottle. So idk how many ml i would be using each res so i cant add how much i would be using in a complete flower cycle?

anyone else growing with Advanced nutrients in this size space any info advice or tips are greatly appreciated thanks

I prefer Sensi A/B and use 8ml per gal of base and 4ml per gal of additives. For coco coir keep your Ph around 5.6-5.8 and things should stay pretty happy.

I usually feed 1-2 times per week and always ph/ppm check my runoff water. 900 ppms during early flower and 1200ppms+ during mid flower letting it taper off towards the end of my cycle.

thanks a lot... that's not too much food it wont burn plants? and how much water do you use 1-2 times a week?