I think you should be fine as long as you keep them in veg. During veg they do not use that much light. When using cfl they spectrum doesn't travel that far so keep them short or position light to hit lower part of plant. But what I think you trying to say is will that much light keep them alive till you can flower outside when it gets warmer...then yeah thats plenty of light go with the 2700 color temp tho if in veg
did I answer your question?