I see. I want to veggy em in a bigger area (4X3.5SQFT 400W MH), slash the males and bam (3X3SQFT 400W HPS flower). An extra foot is a helluva lot of light being lost.

How far would you say is "too far" to vegatate em just untill flowering?

Poor lighting could cause them to stretch, grow slower, become weak and die? If it were stretched, the plant wouldn't be as bushy and compact, causing the lower branches to recieve less light. MH is good for making em compact, HPS 3x3SQFT would help, but might cause a little more stretch? Should I flower earlier than usual maybe? Maybe enhance the fan to make the stems stronger / slow down the stretching? Also, absorbing less light means less nute intake too right :x? Curious George is anxious for your almighty wisdom !

I bet you if cannabis isn't legal within the next 10 years in the states, all internet cultivation knowledge on the internet won't be availiable, sorry random stoned thought haha. Paranoid ahh, I must learn more before I die!