Just use the flor for the first 1-2 weeks... Your seedling will be very delicate... then switch/add to the HPS....

YOU SHOULD ...Veg with the HPS until your plant reaches the the desired size...
then switch to 12/12..... continue using hps.... during budding... : )

You really don't need much flour at all... a cheapy 75-150 bulb with a 5 dollar fixture... your not gonna GROW with this bulb.... it is more to nurse and coddle your seedling or clone : )