Alphabet Animation and Text Based Image Generation

Hi All,

I am relatively new to Davinci and cannot find an answer to my current project dilemma. I am attempting to create an airport flipboard text animation. I have a good animation from A through Z although I had to manually keyframe the animation of the letters (may be limiting later). Is there a way to use an anim curve to animate the alphabet from A through Z?

Also does anyone know a way to make an animation stop on a selected letter or input value?

Finally is it possible to use an expression to generate a saved composition, I want to use this so that typing a word would generate a flipboard per letter and controls could be added later to control the spacing and potentially the sizing?

Thanks everyone for any suggestions.