Hello ganja09,

1) The extra 4 hrs of light mean nothing to your plant, they just got to grow a little more. It's the dark period that you need to worry about. But with 8hrs of dark they should be ok and you have not set your grow back at all.

2)I can't see your plants from here, but IMHO you should not cut any leaves, the plants still need them to process light.

3)Again I can't see what you got going and you did not tells us what you are using for a grow medium so I can't help you.

You could try filling out a trouble shooting form, and submit it again in Plant Problems. Someone might have a fighting chance to help you.