Yep, it will work for Veg.
Build yourself a reflector that will hold your bulb horizontal. You will get better use of light.
I use the same Cfls.
2 x 105 watt 6500k
I'm Vegging 12 plants under those.
Here is a picture of some of my girls @ 1 month 1 week. I will veg for another week and then off to the flower tent