I am not sure I am understanding you. This is your first time growing cannabis? Or flowers? Cause growing cannabis and growing flowers are quite different. And you don't just flower cannabis. You need to give it a decent vegetative period (usually 6-8 weeks) before you flower it, which will take another 8-10 weeks on average. This takes a different light cycle, different spectrum of bulbs, and different nutrients.
Are you familiar with what it takes to grow cannabis? Do you know the requirements to set up a proper grow space? I don't want to sound harsh, but your post does make it sound as if you are quite unfamiliar with growing cannabis. Cannabis is a high energy plant, is finicky and has very specific needs and wants.
Even minimal lighting is going to be a whole lot of light--plan on 90W of LED lighting per sq ft of grow space. If going with CFLs, you will probably need at least 100W per sq ft. Unfortunately, good LEDs are not cheap and cheap LEDs are not good. CFLs arte the worst of all the lights we use to grow in many many watts-- cost more and produce way less. The trouble with trying to use LED and CFLs are that LEDs need to be quite a ways away (18" or so) and CFLs need to be right on top of the plants, like a couple of inches away. That makes it hard to get the CFLs close enough to do any good without blocking the much better light of the LEDs.
Growing hydro can also be a lot tougher for the new grower as it takes a better knowledge of the plant and, especially when you are starting out, you are going to have to be checking ppms and pH every day. Proper pH is important with any grow, but with hydro it is critical and you can kill a plant overnight with too much of anything. You will need a decent pH meter (strips and such are not good enough), a PPM meter, pH up and down, and calibrations fluids for both.
I want to make sure that you understand that I am not trying to discourage you, but to make you aware of what it actually takes to set up a grow. unfortunately, it does take money, time, education, knowledge, space, dedication, energy, and love...along with the lights, ventilation systems, nutrients, and genetics needed.
So, why not tell us more about what you are planning. We can often avert unwise buying of equipment that will not work or is inadequate for what you want to do and/or give you pointers on easier set up. Setting up a grow space is an involved process that really does need to be done correctly.