Blue or Full spectrum light for Seedlings?

Trying to get the general consensus here. Just the blue side? or use full veg and flower mode, with the plasma light? I'm going for taller girls, and currently have 10 hours full spectrum and plasma, with about 10 hours just blue.
About to switch to 24 on with supplemental cfl for a couple weeks, to help keep them stocky for their first month.


Thoughts on blue light to full light time? Using progrow 260 with 50w plasma


Thanks