Only you can make that decision. Some people are more patient than others. You are also taking a risk that you will be able to get the speakers that you want. What if they sell out before Christmas?
The way the economy is, there should be some really good pre-Christmas sales. If you don't mind fighting the crowds, the Black Friday sales should be pretty good as well.
The day most people find the best prices is "Black Friday", the day after Thanksgiving. Around the end of October or first of November, do a Google search for Black Friday deals. There are sites that tell prices for different businesses. But, there's always the chance that floor standing speakers won't be included in the specials..................
Check out The Speaker Company -- they've got floorstanding speakers starting at $349 -- great deal for the money & other members on forums have loved them. Their speakers compare to others selling at $1,200.