You don't need a Johnny Cochran type lawyer to get acquited.

As long as you plead your case, inform the jurors of the history of jury nullification and it's purpose, and act civil and polite....you should be gold.

The moment you act like a douche, or a drug-addict, you're probably screwed.

Most people are sensible enough to understand that what you did was not "evil" enough to deserve punishment. Just hope you don't get stuck with a jury full of hardcore evangelicals.