File Size

My current flash site is rather hefty in its size. I was wondering what tricks I might be able to use to lower its size. The site seems rather plain compared to most other flash sites, and I haven’t even really implemented any bells and whistles, just the basic structure and its still rather big. What should I be doing to keep the size down? And also if I’m targetting an audience that really doesn’t mind a site that has to preload, and I am preloading, what’s the biggest size you all would say it should be? As in absolute no bigger than this or your losing viewers type deal