I have no clue which 2 to start. I'm leaning Bush and Addai because Ingram still has 2 other RB's on the team and he is a rookie playing against a good defense. Addai and Bush are playing lesser defenses and are more established.
Pretty tough choices. I'd likely agree with you on Bush and Addai. Addi might get more touches with Manning maybe out and Bush looks to get the bulk of the carries and has less weapons to compete against than Ingram.