alls lookin well make sure you dont get trigger happy with the nutes to quick but all the plants look healthie and look to have a good growth rate good look fella
that for a first time grower that cfl is the way to go allthough i would suggest getting a higher wattage when you get them because 2050 isnt no where near,it should take roughly 4,000 lumens for one plant so you would need at least two bulbs for the one plant and that is cutting it close...
the simplest way is to by to small fans preferebly in a square casing mount one in the wall blowing into the room and mount one in the wall blowing out of the room then atatch dunt hose from the fans an then let it hand dow (this will stop any light from getting in) this will be good...
i cant understand why cfl would help ata all 2 54 way cfl's is only about 7,000 lumens i can understand why you would want to try anything but be carefull if you change the lights to many times you coulf shok the plants anyways good luck mate