. To start plants under a light you should use nothing bigger then 1 or 2, 35w florecent T8 or T5 or T12 lights (or other small lights). What you do is put the light so its 1/4" away from the plants and keep moving it up when they reach the light. Florecent lights 35w will never burn you plant if their touching so you want to keep them as close as possible... The closer you can keep that light during growing the shorter your plant will be. You will notice when you put them under your big CFL they will grow much taller faster then florecent because of the light there getting + heat. Keeping them in smaller pots to start is also ideal. When my seedlings are as big as yours in your last pic I put a fan on the lowest setting for small amounds of time on and off and increasing it to on all the time. I try not to make it so i have to prop my plants up by doing this. I just watch them get crazy thick stems after the fan is turned on all the time and they hold them selfs up like pro's. Never hold up my plants early unless its an odd one.
