Sounds like a plan, and like you're coming at it from the right angle!

At first when I began broaching it, Jonathan didn't even want to talk about it. (We'd always assumed we'd do it someday - had never looked into the price of it though - but figured we couldn't afford to do it right now.) When I finally convinced him to sit down and hear me out, he was a bit amazed, as was I, to see that our initial investment (I'm sure we'll add-on points in the future) was really not as much as we'd anticipated when the F&F deal was going on. Heck, if we'd bought this time last year, we'd probably be over halfway there to paying the whole thing off with the $$ we spent on accomodations alone this past year!
I think when you want to go multiple times in a year (or if your family is so large that you'd need 2 rooms), DVC is a no-brainer, IMO.
And even though I've been whining about how we probably won't be back until late 2007, I do still have over 50 points of my "freebie" 2005 points to use. As DH said to me as I was crying leaving the MK, "you don't honestly think that we won't be back before then, do you?!"