looks like you have a hid light if its a 400 or bigger you can ditch those small lights their not necessary maybe during flowering if you have some light not getting to certain areas but right ur good with the one light
one last thing because ur humidity is so low id mist your plants 3 times a day with a plastic spray bottle brings up ur humidy and lowers ur temp cause 88 is on the high side you need to get down to high 70's and for veg humidity as high as you can get it
i just got a 400w bro and i used to use a 250 i would recommend using your 400w asap the plants will love it way more than those CFL's you got rocking over there jsut make sure you can control the temps.