Get fabric pots, 3 or 5 gallon size, any brand should work. if you are using cheap chinese LEDs, they are junk, youd be best to ditch them and get a couple quantum boards. Order a free sample of megacrop, it works and is reasonably priced, it might not be enough to get you through a whole grow with that many plants, if you can find a code for the 700g free sample tho it should. I dont know much about that soil but ive seen people have good results using biobiz light, so maybe cut it with some perlite. With LED you need to keep your temps warmer than a lot of people realize, 80-83f is a good target, if temps are dropping a lot when you have lights off, dont turn them off or for as long at least. Ive had good luck adding some osmocote plus into my soil if yours doesnt have any nutes initially, sometimes I add 3-4g / liter. DONT OVER WATER, hard to stress that enough, especially when plants are small, too much water is worse than not enough. You can order decent QBs direct from china and save a few $$, autocobs are good also, but arent cheap, you can build your own fairly easily for about 1/2 what they sell for retail.