yes, specially if it is in 6500K
I would use that fist few weeks then add the HPS and use both in flowering
now I think about it, I hope you don't mean to use the HPS ballast to run the CFL ? that wont work use a normal E27 or E40 fitting
here is mine
30W CFLs use normal E27 fittings I guess a bigger CLF use E40 make sure the CFL is "self ballast"