Hello, I am new here and my first post. I have been struggling with figuring out a good way to grow also. After countless hours watching youtube videos on the subject I have finally found a system that works good for me. Soil: I use 2/3 fox farm to 1/3 perlite with a cup per gallon of worm castings. Nutrients: Something simple, I just use Sensibloom A & B during flower, a little cal mag once in a while and a worm tea feed a couple of times a grow. ph around 6.4 and ppm starting at 200 and building up to 1000 over a month. I would pay way more attention to nute burn (over feeding) and ph problems than I would deficiencies, they are way more common I believe. Your tent is huge for a newbie. I have a Grow Light Science 300 LED from HLG for my 2x4 tent. It pulls 300 watts and cost $400 and would take 4 of these to light your entire grow space. I also have a HLG 260 watt light for my 3x3 tent. Both are very good lights if you want LED. You might want to research par level readings for the light you choose and don't get them too close to the canopy. ; I paid dearly for months before I figured this out. Never harvest early. As a friend of mine told me, "wait til you think they are done and then give them 2 more weeks". Good luck.