I found out some answers.

Warm bulbs are around 3500k and below, cool bulbs are around 4500K+.

Warm bulbs have more red light (flowering) and cool bulbs have more blue light (vegatative). So I am going to use 5 warm 42w CFLs which put out 2600 lumens each. 13,000 lumens is going to be enough to keep my small lowryders healthy, and my grow space is 5.75 square feet. 2260 lumens per foot is low, but then again, it is my first grow and I am on a budget with money and heat. I hope this solves some questions for other people too.