I agree, I think you should do it. Regardless of PPR or not, I'm a big believer in RB over WR, and as stated earlier you can fill in Steve Smith and not lose too much. Go for it, good luck, and please help... viewtopic.php?f=18&t=477602
Looking at your lineup and who's in it now, I've waffled back to keeping Marshall...this is a tough one but I think having Marshall in your lineup is better for you, and you have sold RB's already there...sorry to flip flop, but I'd stay put. Good luck!