I'm definitely an absolute beginner. I knew absolutely nothing a couple weeks ago. I have quite the dilemma on my hands. So here goes... I ordered a 600 watt mh/hps light with switchable ballast & a 40" x 40" x 78" Mylar tent. I know I need a carbon filter fan which I plan on making and having it blow out one of the pre-cut tent holes. I was planning on putting an oscillating fan inside for circulation. And lastly, putting a small fan in one of the pre-cut tent holes blowing air in from outside the tent. From things I've read, I was under the impression that's all I would need. Now a friend is telling me I need this and that and duct work bringing air in from outside the house. Is this true? What are the necessities? Is it gonna be too hot in there? I was feeling really pumped when I ordered my light/tent, but now I'm feeling overwhelmed again I'm getting a clone in the next couple days and I need to be prepared asap and spend not much more money. Please help! Thank you so much! This place has been awesome.