So I am looking to get into growing for personal use. I have a good idea of what I want to do but I do have some questions and want to see if I have a good idea going into this. I want to set up an ~ 4×4 sog with 4 2×2 ebb and flo trays. This thread is my inspiration http://www.rollitup.org/t/get-a-harvest-every-2-weeks.6592/ So the idea is to get a harvest every 2 weeks..i am thinking of running alternating trays of Northern Lights and C99 starting with the NL. My issues are i have low height(about 6 ft to work with) i will be in the attic and i live in the south(hot and humid summers) but i feel like if i run my 12 hour light cycle at night and split some ac off into the area i can deal with my heat issue. My first questions are Should I run 1 1K light or 2 600s? Do I need to raise the first and second trays up higher than the last 2? Is this even a viable grow?? Any other advice would be greatly appreciated!!