If it were me I would take very little off those plants. You should have veg'd for a few weeks under the screen to fill it better then you could have afforded to remove lower stuff, but it looks like you would be taking more than you are leaving which would be very bad at this point. Your best...
Picture 5 from the top on the left hand side of the branch almost looks like a male sac. Not possitive but maybe some more pics of that area I can see the female pistol above it so possible hermie. Just want to make you aware if it is a male sac.
Have you considered removing that fan leave that has the discoloration on it, seems like it was just a fluke as it has not spread or infected the rest of the plant. They are looking nice can't wait to see some good bud sites developing.
I really like the new LED's too, I am just returning to growing, got set up with some 4 foot flouro's 1 over top and one on each side shooting in. I also have a 150 HPS to add once they get bigger. I would like to replace the 150 with a couple LED's and add another sed of flouro's on each side.