dang dude! thats a major project spanning years in the making. i would watch the final product even at 6 or 7 hours length. ambitious as hell. but a very good idea.not sure if you would need a lot of footage from both ironman movies maybe just the important character building parts. i think just using the portions of each movie which build the characters up to the point of the assembly of the avengers team would be plenty. perhaps a pulp style meshing of the story's like sin city. im in for this! you have your work cut out for you. good luck.