So I have been on the CFL route for awhile, & plan to veg my violator kush, white berry, & ak 48 with cfl's this go round again.... do the 70W or 100W HPS [medium base] provide enough juice to cover flowering?? What are the down falls here? I ask because it seems a no brainer to not have to invest in a grow light set up [ballast & all] if these HPS bulbs will work in a medium [regular] light socket?? Is it possible to just take out the CFL's and screw in the smaller HPS when its time to flower [ my ventilation is good enough to handle the heat already]