Preloader Question

Hi,

I’m adding about a 90 frame preloader to my main timeline, and my actual timeline expands out to ~185 frames due to motion tweeing and because my background image has to stay on the stage throughout the whole movie. I’m assuming that I have to start my actual 185 framed movie after the first 90 frames of my preloader - right? And I plan to put my actionscript for the preloader on frame 89 & 90 and tell the loader to play at the beginning of my movie.

Also I have about 15 layers as well. I’ve created a folder for at least my preloader stuff to somehow clean things up and organize, but my main timeline looks very messy. Is there a better way for me to set this up? For some things in my movie that have motion tweening, is it better that I put motion tween on the movie clip itself and just drag it onto my main stage instead of dragging the movie clip onto the main stage and adding motion tweening from there? (Such as creating movie clips within movie clips?)

Hope this makes sense and as always thanks!