I'm sure you can break things down into as many sub-steps as you want. My point is that the raw material that free will works on - our ideas and desires - aren't subject to "free will" but are necessary for deliberately evil acts to happen.I guess one can ask if your premise is correct in the first place... is #1 correct? Is there a 1 a?
As an example: I find bananas revolting, so even if I had the opportunity to steal a banana, I wouldn't do it because I have no desire to have a banana. I had no choice in this matter - my dislike of bananas is reflexive and was never consciously chosen by me.
The evil of me stealing a banana will never happen, but free will was irrelevant to this. Regardless of whether I might want to steal, stealing a banana will not give me any benefit that I value. Nothing I chose caused this circumstance to happen.