CCOB how long to veg? 57 days from germination Jack Diesel Sativas

Hello, here is a link to my journal post with the pictures - day 57, wondering how long to let them grow before flipping the switch and also if my light is too high for a 400w sodium bulb - it's 24 inches, 2 foot from pots. Plants trained w CCOB LST.

https://www.rollitup.org/blogs/blog31329-ccob-update-how-long-let.html

Love growing plants best hobby EVER!

Thanks

http://i120.photobucket.com/albums/o197/dirt_cheap_goods_2006/Light-Distance-Chart-1-.jpg

Looks like my light is way too far away so I will see how close it can go now.