Animating text will text like the text in the video will not halt your real time playback. I think you could do the whole thing in one project if you wanted to. To save time you may want to keyframe text in and out of the screen. Then duplicate the text. Move it further down the timeline and then alter the text. A lot of the animations in the video looked the same. If you want to alter the in and out keyframes you can do that as well to make every animation feel different. Hope this helps and best of luck.