12/12 from seed strain advice?

Hello, I am planning on growing crystal 12/12 from seed (northern lights x white widow). I have seen successful 12/12 from seed grows with northern lights with a great yield! Although i think im going 24/0 for the first week to help sprout ect. Does anyone have any responses or comments towards my plan. Would 5 23W cfl's (2 3500k, 2 2700k, 1 6500k) with 8,000 total lumens be efficient for three plants in a 2x2 area... 6 total but sex with 12/12 from seed is determined after 2-3 weeks... can someone advise me with any problems or concerns i might run into?