The impact of paying down the CC will hit on the next statement date when it reports to the bureaus with the new balance.....
If this is the only debt you have then paying them down should help considerably.....some people have posted gains up to 70 points for paying down the utiliziation....
As I mention to everyone just make sure that once they are all paid off that you let one credit card report a small balance each month and you will gain points over time as you PIF every month.
Good Luck!