I have only this 3 options, so whats is the best NPK for veg and flowering?

First of all, I wouldn't use #2 at all... that sounds like its meant for vegetables and normal house plants... so I'd stay away from that one. If this were my grow, I'd use #1 for veg and #3 for flower.... looks to be perfect NPK for those stages and those are the only ones you would need! Good luck!

Half each of 1 and 2 in veg and half each of 2 and 3 in flowering.

Thank you very much for your help and attention, this community is the best!

1 veg 2 general purpose 3 flower stage 1 Use #1 for veg but you will need a little more phosphorous for strong development. Even rotate feedings with #2. 3 is good for 🌼, could be used for entire flower np. Ideally used for 1st stage but its all good brother. Good luck.

1 for early veg, seedling stages 0-2 weeks. Has a ratio 6-1-5 then as she moves up you can add part 2, make a 2 part mix. 2 parts num 1 and 1 part num 2 so 2 ml of number 1 to 1ml of number 2 mixed together for later stages right up till she flowers. And for flowering 2 1/3 & 3 2/3rds so 1ml of number 1 to 3ml of num 3. As 2 is an all rounder she'll be good to mix into 1 for later veg&flowering, you can even do the same ratios for 2&3 for nums 1&2 And for the last 2 weeks. You want to ripen her. So cut all others, and just push no3. Good luck buddy

First would be good for veg , but xalcium 4%??? Second all season long if you add extra N in veg and PK in flower. Yours is 4-4-4 formula basically Maybe good for flower but K value bigger than P , should be a bit around or equal at least. My view. Use second with a bit of first in veg . Second and a bit of third - in flower.