first time grower, 5 strains in 4x4 tent

hello guys! this is my first time growing. I have a 4x4 tent and currently using a "1200w equivalent" ~200w blurple LED. I have 4x quantum boards @ 3500k i'lll be switching to in a few weeks once I get the drivers for them. Strains are 1x each of green crack cush, northern lights, sour diesel and white widow (all feminized) and one unknown regular. I popped the seeds around 5/21 so maybe 6ish weeks ago. Medium is coco with ~20% perlite in 5g fabric pots. For nutrients I am using the 1 part lucas formula of 7g maxibloom per gallon of water adding molasses and sometimes epsom salts. I was originally using RO water but I've since switched to plain tap water left out 24-48 hours. After adding the nutes and mixing, the PH is between 5.6-5.8 and PPM is around 1300. I was waiting for the coco to kinda dry out before watering, but i've started watering/feeding once a day and noticed improvement in growth. I have topped them and just started LSTing them this week, might top again soon or just keep LSTing. Will be setting up a scrog once they get a bit bigger as well. I also have a couple bottles of yeast sugar and water with holes in the lid to generate co2.

2 of the plants are smaller than the rest because I transplanted them a week or 2 after the others as I didn't have enough coco.

Thanks for checking out my journal, any advice or suggestions is greatly appreciated!

northern lights unknown sour diesel green crack white widow

a little update ...i plucked a few leaves off so the light would penetrate a bit better to the lower growth. you might notice slight discoloration in some leaves and I honestly think it's due to my light being too powerful... the lower (older) leaves would show sign of bleaching and i'd pluck em off and I wasn't sure if it was deficiency/toxicity or light burn so I lowered the light 6 inches overnight (about 8-12hrs) and a bunch of the top leaves were showing damage already so i raised it back up.... it pisses me off because i can't raise it any higher than about 48inches atm and manufacturer recommendation is 4.5 - 6 feet... sorry for poor light, turned off the blurple. i really need to get these quantum boards hooked up soon!

unknown
sour diesel
white widow
green crack
northern lights
sour diesel
unknown
green crack