Lookin good actually, just the burn, but you are doing fine, and that fert is probably just fine for your purposes. It's the proper ratios. Be sure that it has micronutrients in it, and that your pots have plenty of drainage. You are on your way!

LOSE the incandescent lights from your grow- they're totally useless.

BTW those plants aren't showing any signs of being rootbound. They will be good in those pots for another week or so.