Grow Room Lighting dilemma

[Smoking Frog]

Harvested 2 out of 3 plant in my 2x4 tent 2 weeks ago. One Northern Light is still not ready but i've started 3 new plants that are now 22 days old in the same tent.It's getting crowdy in there.
Got another 2x4 and some blurples lights.
Main tent is using a nice Mars Hydro SP250.
Should i finish my NL(about 10-12 days left) with the cheapo blurples in my second tent and use the SP 250 for the young plants or finish the NL with the SP 250 and put the blurples with the younger plants?
Thanks!
Smoking Frog

 

[LazyNhazy]

Blurples with younger plants, or a CFL. First 2 weeks don't require much light at all.

 

[Olderfart]

What Lazy said. Enjoy the results!