Yes, take your new babes, put them under the Mh. Then take your 2-3plants, let them finish under the 250hps and 2 45W cfl's. Did I get that right? If I did , that is your best bet. Putting new babes under an Hps is not a good idea. Hps bulbs don't give off enough UV rays for vegging, resulting in stretched out, lanky budsites. You want to start their new lives off well, go with the Mh

Hope this helps, peace.