Slayah the light, might not be enough, u should get a HPS 400 watts or more, other wise yourll be lucky if you get 1 bud for a whole plant... i recomend you like dave to put your plant in a 18/6 light cicle... otherwhise the plant can compleate its whole natural dayly cycle...
the kind of seeds indica or sativa, it dosnt mather in my experience, i just hope you have a good strain...

Good luck man!