Take a better look at the packaging for those CFLS.

2600 lumens sounds closer to 45W while 1600 is probably 25W. They market them by showing the wattage required by a standard bulb to match the CFL output.

You are going to need a lot more. You will get desired results from a few small plants under 125-200W total watts. Around 6500K spectrum for veg and around 2700 for flowering stages.

Of course, you need money to grow.