we were there the week before Christmas this past year. We had a great time! Absolutely minimal crowds. I'd bet that 2 weeks before Christmas would be even better. To give you an idea, Space and Peter Pan maxxed out at 45 minutes, Splash and BLAB were usually 10-15 minutes. Indy and Haunted Mansion Holiday were around 30. The decorations are great and Haunted Mansion and IASW are all decorated up too. I would recommend the 9-15th but if you can't get those dates, don't worry. The crowds are still going to be much smaller than that week in between Christmas and New Years.
And welcome to the DIS!