Hey thanks for the friend request. They look great, the slightly lighter greening is just the new growth coming through, rather a bit low on the feed than too much I say. I originally was thinking about the two lights in there but looking at the pics now I realise the T5's are quite big. When I started growing I had 8x 250W HO CFL's which seemed like a lot then but after the first grow I realised the limitations, I am however not saying you should go out and replace them at all. I'm sure that will happen naturally down the line.
I suggest keeping the T5 above the canopy as close to it at all times and then have the LED at an angle pronounced towards the plants on one side. I would then rotate the plants around the side that gets the most intense light every day.
I think your biggest goal right now would be to keep the stretch in control during the first 2-3 weeks of flower otherwise you will have a lot of popcorn in your harvest.
They look very good though so well done so far!