Yeah, your go big or go home thing isn't working right now. Those plants are going to get HUGE. Like not trees, but with how many you have, you're going to have a jungle of 3-4 foot tall plants. AND you are only using cfls. If space and heat is an issue, you can't go balls out. Instead, play it safe. Go out, buy yourself 2 600w HPS lights. with how many plants you have, 250w's and 400's are NOT going to give you the light penatration that you need, and if you want to yield more than 14 grams a plant, than you might want to do that soon. otherwise, you should cull some of the weaker plants, narrow your grow down to about 5-8 good plants, spread them out, and yield a couple of ounces off of them. It's up to you.
To have a successful grow room, your plants need plenty of room to grow (that means no crowding plants, they need like 10 inches beween each other for good light penetration and air flow) medium temps (with a room that small you're going to have heating issues for sure. You might want to go a slightly cheaper route and get T-5 flourescents. Good sturdy lights, your plants can almost reach out and touch the lights without it burning them, better light penetration than CFLs, and you don't get the heat issues, plus you save on electricity. Also: Get your plants out of the 2 liter soda bottle. If you run out of pots to plant in, that's a good sign that you should save your seeds and stop planting.