Questions about my setup

Ok, my 3 feminized seeds (White Widow, White Rhino and Super Silver Haze) just germinated and are in the pot ready to grow. The closet I'm gonna put them in is 1,70m x 1,65m x 0,45m, or about 5,4ft x 4,95ft x 1,35ft and I have 150 watt HPS and 59 watt Fluorescent lights. The soil looks pretty fertile to me, I bought it at a super market. I am not worrying about fertilizers yet, but at the end of the second week I plan to gradually introduce a 20-20-20 one and a high P when flowering. My questions are

1. Is there gonna be enough light for them to grow healthily?

2. When should I start flowering?

3. When is the best time to harvest each of them?

4. How many hours is best to leave my lights on during vegetative stage?

5. Anything else I should know?


Thanks

1. Yea with the HPS and the fluorescents that will be plenty for 3 plants.

2. That depends on how tall you want them. Sativas will double and I've heard even triple size from when flowering starts til harvest. Indicas won't grow as much, but leave room for them to grow. Even during flowering they are still growing up.

3. Look at the harvest times from where you bought them. Let them flower at least 8-10 weeks.

4. A kind of "standard" for a lot of people is 18 hours on 6 hours off 18/6. It's what I do but you can run it 24 hours a day 7 days a week if you want, as long as heat and cost isn't an issue.

5. Read the forums a lot, theres tons of information out there. Venting your room, Reflective walls, The right fertilizers, Pot sizes, Soil. Theres just tons of shit man.