The LED you got will be fine for your grow space. If this is your first grow - stick with organic soil. It's very hard to stuff up and it's the easiest way to learn. My first grow was in coco and although it is very beginner friendly, it's much more involved than soil is but the results are somewhere between soil and hydro. Growing in soil is dead easy and anybody can do it. To keep your temps in check you will need to consider an extraction fan. The best thing to do is to get a carbon filter and extraction fan and hook it up to your tent. The carbon scrubber filters out the smells before exhausting it into the outside room. Depending on the strength of your exhaust fan - you may or may not need an intake fan (some people run passive intake) If you're growing stealthy - DO NOT SKIMP OUT ON A GOOD CARBON FILTER AND EXTRACTION FAN. There are only a few ways to get busted and they are: * Telling people (loose lips sink ships) * Smell (the easiest way to get busted) * Light leaks (what is that suspicious light?) * Suspicious temperature leaks (heat coming from areas that should be cold) * Visually (as in leaving the tent open for prying eyes) * Electricity (suspicious usage, stealing electricity (never ever ever steal electricity) Cover all of your bases and you'll be fine. Most importantly though, is to get started. Don't be scared to make mistakes, it's the easiest way to learn.