I was offered MJD and Braylon Edwards
for
Percy Harvin, Deangelo Williams and Donald Brown

Depending on your roster.....I would. MJD should be a beast

QB: Philip Rivers, Matthew Stafford
RB: Steven Jackson, DeAngelo Williams, Ronnie Brown, Laurence Maroney, Donald Brown, Kevin Smith
WR: Reggie Wayne, Percy Harvin, Robert Meachem, Dez Bryant
TE: Owen Daniels
PK: David Akers
TD: Pittsburgh Steelers

That would give you 2 elite backs and who knows about Braylon...he could be good as well. The only thing I would consider is if you can throw in another back to get a little better receiver or just another 2 or 3 receiver...you are thin there.

I would do it.

Braylon will be the guy for the first 4 games. after that he's a crap shoot, but at this point so is harvin.

do this deal and try to unload another RB so you can go after a WR, very sketchy lineup there.

Offer Jackson instead of Williams....I think Jackson will bust this yr.

I would do it. MJD will make up for the few receptions/recpetion yards you may lose by replacing Harvin with Edwards and I am never a fan of running backs that split carries. Your roster is pretty solid so you can definitely afford to do it.