Yea hun, you need to take a look at FAQ's... IMO you should go with the 24/0 (all day, all night) for the first 4-6 weeks. Then after you sex them(male or female...KILL ALL MALEs) you go into 12/12 for the remainder (flower). So what watt bulbs you using.
The MG question some lie it some don't go near the stuff. Its losts of choses in soil I myself went with Advances Nutrients line (Sensi) others like Fox Farm. Just depends on you budget. But i have seen some nice stuff from MG users, that know what they are doing....