The only way I can see this movie do any good is to have Charlton Heston (srry if i mispelled) Be narrarating everyones thougts(you know like a one sided narrarator but have read all thoughts). I know it might sound crazy butI think its a great idea

In my opinion you should read the books in this order:

enders game

enders shadow

shadow of the hegemon

shadow puppets

ender in exile

speaker for the dead

xenocide

shadow of the giant

children of the mind