Wilt spray is used just once at time of cuttings.. stuff is AWESOME...
The best way to manage plants is to keep the lights as absolutely close as possible.

ie- at 12 inches a 1000 watt hps provides approx 150,000 lumens
at 24 inches a 1000 watt hps provides approx 75,000

1/2 the lumes!!!!!! there will be a direct correlation in BUD SIZE and MASS... buds that are 2 inches from a 1000 HID will be HUGE.. like a baseball bat. Buds that are 15 inches willbe more... more.. more like your dick...LOL and buds at 24 inches will be like a pencil...

the closer the light, the closer the nodes will be (this equates to bigger denser buds) and the shorter your plant will be.. THIS IS GOOD : )

During cloning you can keep a cfl at 5-15 inches from you babies....
But when the clones show legs (roots) you can (should) bring the light down to within 1 of the babies.

hope this helps... : )