No, because once the points are banked into next year, you can't "borrow" them back into this year. That's a
DVC rule. You don't really have just 300 2008 Use Year points. You have two separate categories of points. You have 150 points from 2007 that can only be used in 2008 if you have banked them, and another 150 points that can be borrowed to use in 2007, kept to use in 2008, or even banked into 2009.
Clear as mud???