Miracle Grow has a product called the "perfect potting soil"". should I use this for my new seeds. Will is be good enough to grow quality shit? Two, I just ordered a 400w hps. should I use this right off the bat with the new seeds or should I use compacted floresat first? Lastly, I found a new space for my growing. Its a closet about 3'x5'x8' is it going to get pretty hot with the light in there. Will circulating the air with a medium sized fan be enough to keep things cool. Thanks in advance for your time and help.