couple grow questions

hey guys im plainning a stealth pc grow
with 3 lowryder #2's or lowryder blue ryder but i have a few questions for you guys.

1. what soil do yous think i should use? whats the best kind?

2. you think an 18/6 light schedule is best? or should i go for a lil more light

3. is there any nutrients you suggest i use? miracle grow? i know some say its bad some say its amazing

4. any tips for getting more yield outta the lowryders i know they don't produce that much. and i wanna try to get as much as possible

5. and finally any other strains u suggest i try i have limited space of 24 inched plus i have lights in there that narrow it down to more like 20. any other strain that i could get more yield out of i wanna try to get as much yield as possible and i know 3 lowryders in 6' pots inst much

dude if your indoor..soild is mainky something organic rich and healthy...=-) for fertilizers, mor eorganic! go with some fish heads..or even something else the more natural the better!