Pre-conviction speculation about possible sentencing term for Libby

As detailed in this Washington Post article, Lewis Libby’s fate is now in the hands of a federal jury.  The article has this mention of possible sentencing dynamics:

Libby, 56, is charged with five felonies: two counts of making false statements to FBI agents, two counts of perjury and one count of obstructing justice.  He is not charged with the leak itself. If convicted of all charges, he would face a potential prison term of 1 1/2 to three years under federal sentencing guidelines, prosecutors outside the case have said.

Because the guideline are, of course, only advisory, and because lots of different aggravating and mitigating factors might be raised in Libby’s case, I could see Libby’s sentence being much lower or much higher than this estimate.

While we await a jury outcome, perhaps some readers would like to give US District Judge Reggie Walton additional sentencing advice about the possible application of the guidelines’ advice and others 3553(a) factors. 

Obviously, the Libby case is atypical in many ways, but is that alone a reason not to focus on the guidelines?  Do 3553(a) factors suggest that a particularly lenient, or a particularly harsh, sentence for Libby would be appropriate?  I am very interested in thoughtful musings while Libby’s sentencing is still only a possibility.