White Widow Auto (1st auto grow)

This is my first auto grow any tips and help would be great! Growing in a 4 x 4 grow tent planning to veg under my 400 W T5 and flower under a 600 W kind LED. Temperature is always a problem, as I live in a state that is over 90° and over 75% humidity 8 months out of the year, I can only get my room down to 76 and the tents stay between 76 and 85 depending on the time of day and if the lights are on or off since the Ac has to work so hard I struggle with humidity being too low which is funny considering how humid it is outside. Growing up Foxfarm Ocean Forest with the bottom layer of Foxfarm Strawberry Fields don't use many nutrients mainly just liquid seaweed extract humic acid and great white microriza, with my regular "non-auto flower plants" I would typically give them one feeding just before flower and then at week five a flower I suppose I will try the same with the auto flowers Seed day 0: put in paper towel with great white sprinkled on top of the seeds sealed in a Tupperware and put in a dark cabinet will check in 2 days Day 1: after only 24 hrs all seeds had sprouts ready to plant, 3 gal buckets w Fox Farms Strawberry fields in bottom half and Ocean forest in top half, dresses w gnat nix and watered in w ro water w splash KLN and a pour of Seaweed extract, Great white in the hole 400w T5 30" away, 82deg 50% humidity Day 7: of the 8 seeds 6 poped out sprouts, so down to 6 plants, those 6 are looking good, I mist them 4-5x a day and the soil (like 2 sprays from a hand mister) just to keep the humidity up for them