help blind see the way s.o.g

ok i got a simply not that simple opp going im planning on growing 20 clones in 1 gal pots i have 6 under the lights 4 14-16inchs 27-9inches and 14 rooting 8-10 inch cuts i need 7-10 dayz until i feel secure potting them question1.will all my plants catch up and create a even canopy?question2.will my 6 plants thrive in there environment (not get root bound)or does it matter i plan to flower 1 week after 20 are ready question3.when all 20 r ready will a 400 w hps provide enuff light 4x4 area question4whats that best advanced nutes basic veg bloom programstay high ppl never get low

ur def gunna need a 600 or even 1000 for those amount of plant..i dont see how theyll even fit in a 4x4..i got 2 plants in a 3x3 and its tough..if u cont. to rotate there position they even out.

i have more room but that the basic area with 7 ft ceiling

first 4 3x11 3x11 6'7 gl120 tent last two clone room soon to be another grow room 6oo w mh/hps my tent runns off 400w mh/hps and so far so good tip to increase yield anybody
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i REALLY need help with a small gnat problem will i know what needs to be done and how to can about doing it but im looking for a faster way as well as harmless to my girls i also need sum help i.ding deficiencies none now but for future notes and also in soil how can i make sure waters ph good no tester and i sit water for 2-3 days top off b4 use