I play in a fantasy football league with a 3 keeper rule. Who should I keep for next year? See details.?

You should keep J. Addai, he is the lone back now in Indy, R. Bush should be terrific this year, and you should wait with Turner to see where he goes, but if he stays in SD then you should keep the Baltimore defense. Remember though you can never have enough RB's, so if Turner goes somewhere like Green Bay or Buffalo, then you scrap Baltimore and take Turner. RB's give firepower to your team. QBs are easy come and there is always a defense out there, but RB's are hard to come by especially good ones like those you have with you.