Nice going Yellerz!! There's a post on here or ICMAG, can't remember, but this guy veged with CFL's, LED UFO, and a MH. Same strain, soil, ferts, container size, etc. and the CFL out-did the other 2 lights. It was amazing to see, even he was shocked!!
Wait until the 2nd week of flower to add those nutes! Let your girls get some more N, then switch.
Like Shnkrmn said, make sure your clones root before flowering the "mother", otherwise you'll have to wait longer if you take clones late into flowering. Remember, when you take clones, they're the same age as the mother. If she's in flower, they will have to reveg and you could be looking at 4 to 8 weeks depending on the strain, before you get a plant that will flower really good again.
The 3 gallon containers were perfect, unless you want what you currently have........mad fuckin' bush! No pun intended!! From your discription and pics, they would be perfect for Scroging. If your plants tread on each other, you'll want to tuck fan leaves off of budsites being covered. You can even cut half of the fan leaf off, if it's covering budsites, then remove the rest a week later. You have enough big fat fan leaves, so photosynthesis won't be a problem. Keep an eye out on the bottom of your plants too. Come 3 to 4 weeks into flower, trim some branches off the main stem b/c they won't get sufficient light penetration and will be a waste of energy on popcorn buds by your girls. This in turn will allow them to focus that popcorn energy strictly on the budsites that are getting light, which means more fatter and denser nugs up top.
Nice to see a woman on here representing!!