Quote Originally Posted by Nightwolf1772
also whats about the normal veg time before i swich to 12/12

You can flip them when ever you want too. It is best to flip them after the internode spacing is not even any more. (The branches are not growing from the same place, they have started to stager. Any time after this is ideal, and get a better yield. bigger the plant the bigger the buds. The only concern here is that the plant is going to grow big, 2-3x the size it is the day you flip it.
Hint: put your plant in to 24 hours of darkness the day of the flip and no vitamin B. This will take a 5-7 days off the total cycle.

I am unable to tell you the benefits of topping I will have to leave that to some one else. Some people top in veg to try to make the plant busher, others top during flower to get the other buds sites to grow. Because the top is shocked the rest of the plant will start to grow in a day or so 5-7 days later the top recovers and everything is normal again and the plant is busher. How ever you have stalled your plant for 5-7 days and cut the fucking top off.
Bending and training in nicer on the plant