Can you specify movieclips as cache as bitmap, inside one large loaded movieclip?

Question

at this point I'm not sure if i have to individualy add cacheasbitmap/cacheasbitmapmatrix to true to each display object that needs it and load them seperatly
or if i can load the movieclip that they are in first and specify their properties later then add it to the stage when it is all loaded.
can anyone tell me the best way to do this or maybe some tutorials to check out?
the AS for the loading is
var PLoading:Bitmap = new Bitmap (new PlaneLoading());
addChild(PLoading); //loading screen
var PLevel:PlaneLevel = new PlaneLevel();
this.addEventListener(Event.ENTER_FRAME, loading); //reoccuring event listener happens as often as is set by FPS
function loading(e:Event):void //
    var total:Number = this.stage.loaderInfo.bytesTotal;
    var loaded:Number = this.stage.loaderInfo.bytesLoaded;
    var percent:Number = loaded/total * 100;
    trace (percent);
    if (total == loaded) //checks if all bytes for all movieclips have been loaded
        this.removeEventListener(Event.ENTER_FRAME, loading);
        onComplete();
function onComplete ():void //removes loading picture, and loads level movieclip
    removeChild(PLoading);
    addChild(PLevel);
    PLevel.x = 475.15;
    PLevel.y = 315.35;

Answer 1

It is the same do it individually for each MovieClip or all contained in a MovieClip. What you should know is that a movie clip with cachebitmap = true consume resources whenever it is drawn and if a movie clip is an animation, each frame will be redrawn. 
look this:
http://help.adobe.com/en_US/as3/mobile/WS4bebcd66a74275c36c11f3d612431904db9-7ffc.html