Hi, Jennifer! The Polynesian is a beautiful resort, I can understand while you want to stay there!
There are some ways to save some money. First, try checking
HERE for special offers. You will find the latest offers from Disney that sometimes include room discounts, free nights, or free dining. You can also try to go during Value Season (dates in January, September, early/mid December) when rates are at their lowest.
If you are a AAA member, call (407)W-DISNEY and ask for a AAA rate to see what is available. Also get on e-newsletters from www.allears.net and www.mousesavers.com to keep up to date on any deals.
If the Polynesian ends up being out of your budget range, there are some great Moderate Resorts. Coronado Springs has queen beds and newly refurbished rooms, and Port Orleans French Quarter is quaint and my kids favorite place to stay!
Do some research for the best deal and hopefully you will be lounging on the beautiful Polynesian beach very soon! Good luck.