I am not a seasoned grower and don’t want to pretend I know it all. However, I am guessing you need more lighting. I have a post where you can get a lot more details (I will come back with the title so you and anyone else can check it out if you wish).
If you want a really strong grow, you should be shooting for 50 true watts a square foot (many say 35w with LEDs). You said your area is about 2’x4’ or 8 square feet. That means you ideally you need about 400 true watts. That Vaporspectra 300w has about 135 true watts. Frankly, CFLs don’t work real well past seedling and are not adding much. Using 35w LED benchmark, you need 280 true watts. Two of the lights you have will give 270 true watts.
I would hate to see you go through all the trouble of growing and then get a weak harvest.