how did you limit the size before flowering my dream would be four plants at a push 6 plants with a greenscreen style of grow but ive never got close to keeping my plants at a size i'm happy with (edit that looks like its gonna be a good smoke mate)Power really depends on your growing space. I've got one of those big "thowies" (#Ez8 )and I can't use it at full power, my tent is too small. I run it at 60%and it still gets hot in there. Personally a mechanical timer will be a good investment, consistent schedule, little too no worries. I've had great results from a 100w light also. She was a bit fluffy but this girl only ever saw 1 Mars Hydro ts600