As other posters have said, I would seriously consider buying the AKV add-on through Disney. You might want to contact your guide to see what you can get vs. the price you were willing to pay for the resale + closing costs + 1st quarter 2010 MFs. Your resale savings may not be as much as you think.
With a December UY, you will get 2009 points, no closing costs, and your MFs won't start until your closing date, which would be some time next month.
Good luck with whatever you decide!