Oh well, you gotta do what you gotta do....as far as feeding and watering goes you may find you water less with CFL is the temps are lower. Prob won't throw off your schedule to much. Yes I use molasses towards the end of my grow (last 3-4 weeks), if it helps me it is debatable. You want to find black strap molasses (unsulphured). It is not really a food, it is good for the roots...happy roots happy plant. The issue is it helps organic soils with established bacteria more. If your using FFOF and feeding regular ferts (not organic) if it helps it is debatable. So will argue it doesn't help and actually depletes N in the soil and can through stuff off. I guess like everything give it a go, try it with and without....see if it makes a difference to you.
Good luck.