Assembly sequence is a great and easy tool for showing something like that. once you start a new sequence make sure to save your camera position, you can copy and past it at different times in the movie making so that your camera always ends up at the same point. if you make each section move in small steps some up and then others down that should work. once you are happy with how it plays in ug look at the number of frames each step takes and multiply them by around 3x. this will help later. if you are zooming around to different camera positions and want smoother transitions between cameras go to Preferences -> visualization performance -> then the general graphics tab then set the slider at the top to as smooth as possible. then play the video back saving to avi with the play back speed set at 1.
it will take a little bit and be very long but that is ok. once you have your avi done open windows moviemk.exe (its a part of all windos, some times hidden though) drag that into the project are then drag that down to the story board (the thing on the bottom) and right click on it in the time line and the video effect of speed up, double at least around 3x, then save the video out. you are left with a small filezise and faster running video of pretty decent quality, if you have turned on true shading with perspective off and a solid color background.