sure the Hortilux is a great choice but monitor the temperature at the top of the canopy at all times.

Do not use the HPS light until your plants are in the Vegetation cycle.
You can use the Hortilux bulb for both the veg and flower cycle.

You reach that cycle once you have 4 sets of true leaves formed. Before that you are in the seedling stage and should use only the fluorescent lights.