Loading assets in a projector that runs continuously

I’m developing a game for a touchscreen that will be on all the time, published as a Flash Player 10 projector. There are a lot of large images and other assets for each section of the game. Should I load them all up front, so that I only have that delay at startup of the projector, or would having all of those Loaders in memory at once affect performance? Alternatively, I could put all of the assets in the library, but the exe will be huge, and again I don’t know how that will effect performance.

I would appreciate any other related considerations/insights as this is my first project of this kind, where the program will be running forever. (I will check for memory leaks! I know that much.)