we just bought into AKK 3 weeks ago and thought the same way you are right now. We pondered a couple months, called our 2 guides several times and finally came to the decision to go for it. We want to have something great like this for a very long time and then give it to our 2 boys down the road. You only can control and make your decisions, you can't control the economy. You and your family have to feel comfortable with your decision and go into this with no doubts at all.
We financed thru disney for 10 years, but will get it paid off in 5.
Good luck with your decision.