agree with tomato, bigger pots are probably necessary. I also use 4 liter pots. Go ahead and trim those fans man. You'll be happy you got rid of the fan leaves about 4-5 days after you trim. Nice work with just CFL by the way. If you can work it in there you will probably need supplemental side lighting to bring four autos to full flowering potential. Luminescence fades quickly with CFL lights the further they are away from the plant. When spread across 4 the 200w you have will kick ass in veg but flowering with just that will take longer and will not allow your plants to reach their full potential (just my opinion from using CFLS in the past). Either way you go, definitely nice work thus far.