You will not get anywhere close to 2 pounds. Not with 80 watts of flouros, and definitely not with 40 watts.
Most people judge grows on "grams per watt". Anything over 0.5gs/w is considered pretty good. So expect around 20 grams with your current lighting....not 2 pounds, lol.
Oh yeah, and don't listen to phinxter. Birth control pills are designed for HUMANS. If anything, they would kill your seeds.
Don't ever use nutes on seedlings, that will kill them also.
Infact, just read this:
How To Grow Marijuana