There's other forum areas for these questions.
But...
Watts doesn't mean shit. As the lights become more efficient you get more light/watt. I'm all HID, but i want to change one of my tents over to LED if/ when one of my ballasts die.
Pick either organic, or chemical, and stick to it. I always recommend organic soil, fish fert and tap water for beginners, fucking simple. Teas are easy, put stuff in a bucket with water, aerate for around 24 hrs, apply.
A fan for lights and a fan for the tents themselves, both on speed controllers. Have your intake low, exhaust high. Couple clip on fans in each tent. Depending on your geographical location and location of the grow in your home, you might need additional climate controls. The plants will make the humidity if you dont have it, they raised my ambient RH in my basement from low 50% to mid 70%, i had to get a dehumidifier, hadn't needed one down there for 20+ years.
Scrog takes awhile. SOG doesn't need to constantly be watered of you're smart. Put a kiddie pool in the tent, or the smart pot raised garden bags, instead of individual pots, could even leave it there and go no till.
Don't sweat temp, my tents have hit 95 in the past and although there might be a slight decrease in overall quality, a loss of some terpens and buds tend to get fluffy, it still tastes good and gets everyone high. It's just not the rock hard, stanky bud you get with optimal conditions. I'm personal, so whateva.
Read my sig on flushing....