[toss]

One thing I dislike about your line is that the limper may be a poor player and DD holding this piece of info. that you don't have raises getting you to fold a better hand while being ahead of the limper a good amount. I think this is more applicable in live play since B&M usually means more fish. I'd rather checkraise the flop hoping to knock out some hands that can hurt you.

If the limper folds and DD raises, I'd call with the intention of check folding the river. I may be grossly wrong, but I can only see DD raising this turn with a worse hand if its with the intention of checking behind on the river.