Cofty has hit the nail the locks the coffin for the free will argument.
So take away the human choices, just look at the evil that exists without it. Substitute tsumani, black plague, aids, cancer, death by viper, infant mortality, spontaneous abortion, epilepsy, massive earthquakes, etc, for 'evil' in the premise-statement.
Tec - the statement doesn't demand that there is no god. Look at it carefully. It just demands that " There is no being that is all-knowing, all-powerful, and perfectly loving."
So you can have your god - but he is, if he is, a heartless bastard unworthy of praise and worship at the least, and worthy of hatred at the best. If he/she, like you, wishes to excuse himself of responsibility for evil on the basis of 'free will' arguments - well then he is disgusting, but certainly not all knowing, powerful, and perfectly loving. It would seem to me that he makes the Devil look like a nice fellow.
Jeff