I like to use 23 watt 5000k cfls. That's what I use on my seedlings. I have 8 for 7 seedlings. You can use 6500k but Ive found better response to 5000k and they are easier to find. I would say prob at least 12 23watt 5000k or you can go a little bigger cfl and get a reflector with it and use less lights it's just a matter of what you have to spend and your setup/space.
Just make sure they are at least 5000k bro. More isn't always better. Just rememeber that.