Well I read this thread and gave you +Rep. Awsome thread. It was really informative.
The biggest thing I could see to changing the setup would be to upgrade the LEDs to the high output. Also put them real close to the plants.
http://www.ledgrow.eu/
This guy has done 5 runs of growing bud with his lights and they are just getting better and better. He definatly has flaws in his system but it gives you another look at what he added.
Another thing that is mentioned in other LED grows is to throw a white light in there. It is supposed to give that little extra spectrums of light. The link I posted doesn't go into great detail but you get the general idea. This is all still in testing but soon LEDs will be the only way to go and everybody will be talking trash about the MH/HPS systems.
Again Great grow and article!!!