I don't think it's a good idea as a whole to continually load image data. I don't know the inner workings of the engine, but I believe it's not optimized in any way to do something like that.
What could work, however, is to create a lot of placeholder animations and animation frames. During your loading phase, preload all of the image data into said placeholder animations/frames. You'd be able to use C3 animation engine that way, although you could also set every animation speed to 0 and create your own.